1159557203 has 16 divisors (see below), whose sum is σ = 1361083584. Its totient is φ = 967127040.

The previous prime is 1159557193. The next prime is 1159557209. The reversal of 1159557203 is 3027559511.

It is a cyclic number.

It is not a de Polignac number, because 1159557203 - 2¹⁴ = 1159540819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1159557209) 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, 108851 + ... + 119027.

It is an arithmetic number, because the mean of its divisors is an integer number (85067724).

Almost surely, 2^1159557203 is an apocalyptic number.

1159557203 is a deficient number, since it is larger than the sum of its proper divisors (201526381).

1159557203 is a wasteful number, since it uses less digits than its factorization.

1159557203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10622.

The product of its (nonzero) digits is 47250, while the sum is 38.

The square root of 1159557203 is about 34052.2716276022. The cubic root of 1159557203 is about 1050.5838636360.

The spelling of 1159557203 in words is "one billion, one hundred fifty-nine million, five hundred fifty-seven thousand, two hundred three".