1157455913 has 4 divisors (see below), whose sum is σ = 1157713920. Its totient is φ = 1157197908.

The previous prime is 1157455891. The next prime is 1157455951. The reversal of 1157455913 is 3195547511.

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 1157455913 - 2¹⁰ = 1157454889 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 (1157455963) 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, 122153 + ... + 131286.

It is an arithmetic number, because the mean of its divisors is an integer number (289428480).

Almost surely, 2^1157455913 is an apocalyptic number.

It is an amenable number.

1157455913 is a deficient number, since it is larger than the sum of its proper divisors (258007).

1157455913 is an equidigital number, since it uses as much as digits as its factorization.

1157455913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258006.

The product of its digits is 94500, while the sum is 41.

The square root of 1157455913 is about 34021.4037482288. The cubic root of 1157455913 is about 1049.9488752130.

The spelling of 1157455913 in words is "one billion, one hundred fifty-seven million, four hundred fifty-five thousand, nine hundred thirteen".