1157238929 has 24 divisors (see below), whose sum is σ = 1476072000. Its totient is φ = 897130080.

The previous prime is 1157238923. The next prime is 1157238931. The reversal of 1157238929 is 9298327511.

It is a happy number.

It is not a de Polignac number, because 1157238929 - 2⁴ = 1157238913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1157238923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101867 + ... + 112655.

It is an arithmetic number, because the mean of its divisors is an integer number (61503000).

Almost surely, 2^1157238929 is an apocalyptic number.

It is an amenable number.

1157238929 is a deficient number, since it is larger than the sum of its proper divisors (318833071).

1157238929 is a wasteful number, since it uses less digits than its factorization.

1157238929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11013 (or 11006 counting only the distinct ones).

The product of its digits is 272160, while the sum is 47.

The square root of 1157238929 is about 34018.2146650879. The cubic root of 1157238929 is about 1049.8832610955.

The spelling of 1157238929 in words is "one billion, one hundred fifty-seven million, two hundred thirty-eight thousand, nine hundred twenty-nine".