16309789431 has 48 divisors (see below), whose sum is σ = 24192201600. Its totient is φ = 9713259072.

The previous prime is 16309789427. The next prime is 16309789439. The reversal of 16309789431 is 13498790361.

It is not a de Polignac number, because 16309789431 - 2² = 16309789427 is a prime.

It is a super-2 number, since 2×16309789431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16309789439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10328400 + ... + 10329978.

It is an arithmetic number, because the mean of its divisors is an integer number (504004200).

Almost surely, 2^16309789431 is an apocalyptic number.

16309789431 is a deficient number, since it is larger than the sum of its proper divisors (7882412169).

16309789431 is a wasteful number, since it uses less digits than its factorization.

16309789431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788 (or 1721 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 16309789431 in words is "sixteen billion, three hundred nine million, seven hundred eighty-nine thousand, four hundred thirty-one".