1157254915 has 32 divisors (see below), whose sum is σ = 1472587776. Its totient is φ = 872027520.

The previous prime is 1157254909. The next prime is 1157254921. The reversal of 1157254915 is 5194527511.

It is an interprime number because it is at equal distance from previous prime (1157254909) and next prime (1157254921).

It is not a de Polignac number, because 1157254915 - 2⁹ = 1157254403 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 716649 + ... + 718261.

It is an arithmetic number, because the mean of its divisors is an integer number (46018368).

Almost surely, 2^1157254915 is an apocalyptic number.

1157254915 is a deficient number, since it is larger than the sum of its proper divisors (315332861).

1157254915 is a wasteful number, since it uses less digits than its factorization.

1157254915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779.

The product of its digits is 63000, while the sum is 40.

The square root of 1157254915 is about 34018.4496266364. The cubic root of 1157254915 is about 1049.8880954059. Note that the first 3 decimals are identical.

The spelling of 1157254915 in words is "one billion, one hundred fifty-seven million, two hundred fifty-four thousand, nine hundred fifteen".