10931949157 has 4 divisors (see below), whose sum is σ = 10932835456. Its totient is φ = 10931062860.

The previous prime is 10931949131. The next prime is 10931949167. The reversal of 10931949157 is 75194913901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10931949157 - 2⁷ = 10931949029 is a prime.

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 10931949157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10931949167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424383 + ... + 449404.

It is an arithmetic number, because the mean of its divisors is an integer number (2733208864).

Almost surely, 2^10931949157 is an apocalyptic number.

It is an amenable number.

10931949157 is a deficient number, since it is larger than the sum of its proper divisors (886299).

10931949157 is an equidigital number, since it uses as much as digits as its factorization.

10931949157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886298.

The product of its (nonzero) digits is 306180, while the sum is 49.

The spelling of 10931949157 in words is "ten billion, nine hundred thirty-one million, nine hundred forty-nine thousand, one hundred fifty-seven".