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1307407381 = 7672787649
BaseRepresentation
bin100110111101101…
…0111010000010101
310101010010011202121
41031323113100111
510134144014011
6333422135541
744253531220
oct11573272025
93333104677
101307407381
11610aa7575
12305a215b1
1317ab2c747
14c58cc5b7
1579ba4e71
hex4ded7415

1307407381 has 8 divisors (see below), whose sum is σ = 1516481600. Its totient is φ = 1103908608.

The previous prime is 1307407369. The next prime is 1307407393. The reversal of 1307407381 is 1837047031.

It is an interprime number because it is at equal distance from previous prime (1307407369) and next prime (1307407393).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1307407381 - 25 = 1307407349 is a prime.

It is a super-2 number, since 2×13074073812 = 3418628119786558322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1307407351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1393356 + ... + 1394293.

It is an arithmetic number, because the mean of its divisors is an integer number (189560200).

Almost surely, 21307407381 is an apocalyptic number.

It is an amenable number.

1307407381 is a deficient number, since it is larger than the sum of its proper divisors (209074219).

1307407381 is an equidigital number, since it uses as much as digits as its factorization.

1307407381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787723.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 1307407381 is about 36158.0887354406. The cubic root of 1307407381 is about 1093.4618718990.

The spelling of 1307407381 in words is "one billion, three hundred seven million, four hundred seven thousand, three hundred eighty-one".

Divisors: 1 7 67 469 2787649 19513543 186772483 1307407381