1164205560 has 128 divisors (see below), whose sum is σ = 4226411520. Its totient is φ = 250447872.

The previous prime is 1164205517. The next prime is 1164205583. The reversal of 1164205560 is 655024611.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26484 + ... + 55043.

It is an arithmetic number, because the mean of its divisors is an integer number (33018840).

Almost surely, 2^1164205560 is an apocalyptic number.

1164205560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1164205560 is an abundant number, since it is smaller than the sum of its proper divisors (3062205960).

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

1164205560 is a wasteful number, since it uses less digits than its factorization.

1164205560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81565 (or 81561 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1164205560 is about 34120.4566206257. The cubic root of 1164205560 is about 1051.9858292028.

The spelling of 1164205560 in words is "one billion, one hundred sixty-four million, two hundred five thousand, five hundred sixty".