13945654931 has 16 divisors (see below), whose sum is σ = 15908042304. Its totient is φ = 12110951424.

The previous prime is 13945654927. The next prime is 13945654949.

13945654931 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13945654931 - 2² = 13945654927 is a prime.

It is a super-2 number, since 2×13945654931² (a number of 21 digits) contains 22 as substring.

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 13945654931.

It is not an unprimeable number, because it can be changed into a prime (13945654031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 630695 + ... + 652431.

It is an arithmetic number, because the mean of its divisors is an integer number (994252644).

Almost surely, 2^13945654931 is an apocalyptic number.

13945654931 is a deficient number, since it is larger than the sum of its proper divisors (1962387373).

13945654931 is a wasteful number, since it uses less digits than its factorization.

13945654931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24670.

The product of its digits is 1749600, while the sum is 50.

The spelling of 13945654931 in words is "thirteen billion, nine hundred forty-five million, six hundred fifty-four thousand, nine hundred thirty-one".