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1887070013 = 127117112689
BaseRepresentation
bin111000001111010…
…0110011100111101
311212111212002101222
41300132212130331
512331042220023
6511130243125
764522554563
oct16036463475
94774762358
101887070013
118892246a4
12447b864a5
13240c5749a
1413c89da33
15b0a06cc8
hex707a673d

1887070013 has 8 divisors (see below), whose sum is σ = 1903703040. Its totient is φ = 1870464960.

The previous prime is 1887070001. The next prime is 1887070033. The reversal of 1887070013 is 3100707881.

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 1887070013 - 214 = 1887053629 is a prime.

It is a super-2 number, since 2×18870700132 = 7122066467927640338, 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 (1887070033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142373 + ... + 155061.

It is an arithmetic number, because the mean of its divisors is an integer number (237962880).

Almost surely, 21887070013 is an apocalyptic number.

It is an amenable number.

1887070013 is a deficient number, since it is larger than the sum of its proper divisors (16633027).

1887070013 is a wasteful number, since it uses less digits than its factorization.

1887070013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13987.

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 1887070013 is about 43440.4191163023. The cubic root of 1887070013 is about 1235.7463540865.

Adding to 1887070013 its reverse (3100707881), we get a palindrome (4987777894).

The spelling of 1887070013 in words is "one billion, eight hundred eighty-seven million, seventy thousand, thirteen".

Divisors: 1 127 1171 12689 148717 1611503 14858819 1887070013