Search a number
-
+
1006141391 = 4323398637
BaseRepresentation
bin111011111110000…
…111111111001111
32121010020021111222
4323332013333033
54030033011031
6243501033555
733635026553
oct7376077717
92533207458
101006141391
11476a38a12
12240b558bb
131305aa648
14978a9863
155d4e5e7b
hex3bf87fcf

1006141391 has 4 divisors (see below), whose sum is σ = 1029540072. Its totient is φ = 982742712.

The previous prime is 1006141349. The next prime is 1006141397. The reversal of 1006141391 is 1931416001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1931416001 = 11317092177.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1006141391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1006141391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006141397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11699276 + ... + 11699361.

It is an arithmetic number, because the mean of its divisors is an integer number (257385018).

Almost surely, 21006141391 is an apocalyptic number.

1006141391 is a deficient number, since it is larger than the sum of its proper divisors (23398681).

1006141391 is an equidigital number, since it uses as much as digits as its factorization.

1006141391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23398680.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1006141391 is about 31719.7318872654. The cubic root of 1006141391 is about 1002.0429538308.

Adding to 1006141391 its reverse (1931416001), we get a palindrome (2937557392).

The spelling of 1006141391 in words is "one billion, six million, one hundred forty-one thousand, three hundred ninety-one".

Divisors: 1 43 23398637 1006141391