1157955975 has 72 divisors (see below), whose sum is σ = 2296674432. Its totient is φ = 552974400.

The previous prime is 1157955943. The next prime is 1157955977. The reversal of 1157955975 is 5795597511.

It is a happy number.

1157955975 is a `hidden beast` number, since 1 + 15 + 7 + 9 + 559 + 75 = 666.

It is not a de Polignac number, because 1157955975 - 2⁵ = 1157955943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157955977) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 162334 + ... + 169316.

It is an arithmetic number, because the mean of its divisors is an integer number (31898256).

Almost surely, 2^1157955975 is an apocalyptic number.

1157955975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1157955975 is a deficient number, since it is larger than the sum of its proper divisors (1138718457).

1157955975 is a wasteful number, since it uses less digits than its factorization.

1157955975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7077 (or 7069 counting only the distinct ones).

The product of its digits is 2480625, while the sum is 54.

The square root of 1157955975 is about 34028.7521810601. The cubic root of 1157955975 is about 1050.1000584920.

The spelling of 1157955975 in words is "one billion, one hundred fifty-seven million, nine hundred fifty-five thousand, nine hundred seventy-five".