16949311313 has 12 divisors (see below), whose sum is σ = 18636298884. Its totient is φ = 15403449600.

The previous prime is 16949311307. The next prime is 16949311367. The reversal of 16949311313 is 31311394961.

It can be written as a sum of positive squares in 2 ways, for example, as 16161274129 + 788037184 = 127127^2 + 28072^2 .

It is not a de Polignac number, because 16949311313 - 2¹⁰ = 16949310289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16949317313) 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 11 ways as a sum of consecutive naturals, for example, 379733 + ... + 422013.

It is an arithmetic number, because the mean of its divisors is an integer number (1553024907).

Almost surely, 2^16949311313 is an apocalyptic number.

It is an amenable number.

16949311313 is a deficient number, since it is larger than the sum of its proper divisors (1686987571).

16949311313 is a wasteful number, since it uses less digits than its factorization.

16949311313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45616 (or 45605 counting only the distinct ones).

The product of its digits is 52488, while the sum is 41.

The spelling of 16949311313 in words is "sixteen billion, nine hundred forty-nine million, three hundred eleven thousand, three hundred thirteen".