1159904871 has 24 divisors (see below), whose sum is σ = 1719609840. Its totient is φ = 753134976.

The previous prime is 1159904827. The next prime is 1159904887. The reversal of 1159904871 is 1784099511.

It is a happy number.

1159904871 is a `hidden beast` number, since 11 + 599 + 0 + 48 + 7 + 1 = 666.

It is not a de Polignac number, because 1159904871 - 2⁶ = 1159904807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1159904071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42861 + ... + 64473.

It is an arithmetic number, because the mean of its divisors is an integer number (71650410).

Almost surely, 2^1159904871 is an apocalyptic number.

1159904871 is a deficient number, since it is larger than the sum of its proper divisors (559704969).

1159904871 is a wasteful number, since it uses less digits than its factorization.

1159904871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21775 (or 21772 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The square root of 1159904871 is about 34057.3761614133. The cubic root of 1159904871 is about 1050.6888513823.

The spelling of 1159904871 in words is "one billion, one hundred fifty-nine million, nine hundred four thousand, eight hundred seventy-one".