1157418899 has 16 divisors (see below), whose sum is σ = 1430761920. Its totient is φ = 911744640.

The previous prime is 1157418859. The next prime is 1157418901. The reversal of 1157418899 is 9988147511.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1157418899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1157418899.

It is not an unprimeable number, because it can be changed into a prime (1157418859) 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, 6932 + ... + 48609.

It is an arithmetic number, because the mean of its divisors is an integer number (89422620).

Almost surely, 2^1157418899 is an apocalyptic number.

1157418899 is a deficient number, since it is larger than the sum of its proper divisors (273343021).

1157418899 is a wasteful number, since it uses less digits than its factorization.

1157418899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55790.

The product of its digits is 725760, while the sum is 53.

The square root of 1157418899 is about 34020.8597627985. The cubic root of 1157418899 is about 1049.9376830741.

The spelling of 1157418899 in words is "one billion, one hundred fifty-seven million, four hundred eighteen thousand, eight hundred ninety-nine".