1157311563 has 8 divisors (see below), whose sum is σ = 1543252176. Its totient is φ = 771456000.

The previous prime is 1157311543. The next prime is 1157311577. The reversal of 1157311563 is 3651137511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1157311563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1157311513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24663 + ... + 54063.

It is an arithmetic number, because the mean of its divisors is an integer number (192906522).

Almost surely, 2^1157311563 is an apocalyptic number.

1157311563 is a deficient number, since it is larger than the sum of its proper divisors (385940613).

1157311563 is a wasteful number, since it uses less digits than its factorization.

1157311563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42525.

The product of its digits is 9450, while the sum is 33.

The square root of 1157311563 is about 34019.2822234685. The cubic root of 1157311563 is about 1049.9052259130.

The spelling of 1157311563 in words is "one billion, one hundred fifty-seven million, three hundred eleven thousand, five hundred sixty-three".