1159633720 has 32 divisors (see below), whose sum is σ = 2981916000. Its totient is φ = 397588608.

The previous prime is 1159633703. The next prime is 1159633723. The reversal of 1159633720 is 273369511.

1159633720 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1159633720² = 2689500729122076800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1159633720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1159633723) 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, 2070495 + ... + 2071054.

It is an arithmetic number, because the mean of its divisors is an integer number (93184875).

Almost surely, 2^1159633720 is an apocalyptic number.

1159633720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1159633720 is an abundant number, since it is smaller than the sum of its proper divisors (1822282280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1159633720 is a wasteful number, since it uses less digits than its factorization.

1159633720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4141567 (or 4141563 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 1159633720 is about 34053.3951317633. The cubic root of 1159633720 is about 1050.6069718125.

The spelling of 1159633720 in words is "one billion, one hundred fifty-nine million, six hundred thirty-three thousand, seven hundred twenty".