16239040919 has 2 divisors, whose sum is σ = 16239040920. Its totient is φ = 16239040918.

The previous prime is 16239040913. The next prime is 16239040931. The reversal of 16239040919 is 91904093261.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16239040919 is a prime.

It is a super-2 number, since 2×16239040919² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16239040919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16239040913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8119520459 + 8119520460.

It is an arithmetic number, because the mean of its divisors is an integer number (8119520460).

Almost surely, 2^16239040919 is an apocalyptic number.

16239040919 is a deficient number, since it is larger than the sum of its proper divisors (1).

16239040919 is an equidigital number, since it uses as much as digits as its factorization.

16239040919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 16239040919 in words is "sixteen billion, two hundred thirty-nine million, forty thousand, nine hundred nineteen".