16439334931 has 2 divisors, whose sum is σ = 16439334932. Its totient is φ = 16439334930.

The previous prime is 16439334911. The next prime is 16439334953. The reversal of 16439334931 is 13943393461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16439334931 - 2¹¹ = 16439332883 is a prime.

It is a super-2 number, since 2×16439334931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16439334911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8219667465 + 8219667466.

It is an arithmetic number, because the mean of its divisors is an integer number (8219667466).

Almost surely, 2^16439334931 is an apocalyptic number.

16439334931 is a deficient number, since it is larger than the sum of its proper divisors (1).

16439334931 is an equidigital number, since it uses as much as digits as its factorization.

16439334931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 46.

The spelling of 16439334931 in words is "sixteen billion, four hundred thirty-nine million, three hundred thirty-four thousand, nine hundred thirty-one".