1057111923 has 16 divisors (see below), whose sum is σ = 1612811520. Its totient is φ = 603323616.

The previous prime is 1057111859. The next prime is 1057111943. The reversal of 1057111923 is 3291117501.

It is not a de Polignac number, because 1057111923 - 2⁶ = 1057111859 is a prime.

It is a super-2 number, since 2×1057111923² = 2234971235497515858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1057111943) 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, 13068 + ... + 47801.

It is an arithmetic number, because the mean of its divisors is an integer number (100800720).

Almost surely, 2^1057111923 is an apocalyptic number.

1057111923 is a deficient number, since it is larger than the sum of its proper divisors (555699597).

1057111923 is an equidigital number, since it uses as much as digits as its factorization.

1057111923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61706.

The product of its (nonzero) digits is 1890, while the sum is 30.

The square root of 1057111923 is about 32513.2576497650. The cubic root of 1057111923 is about 1018.6859674559.

The spelling of 1057111923 in words is "one billion, fifty-seven million, one hundred eleven thousand, nine hundred twenty-three".