1155715660 has 48 divisors (see below), whose sum is σ = 2786999040. Its totient is φ = 398139840.

The previous prime is 1155715643. The next prime is 1155715751. The reversal of 1155715660 is 665175511.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134064 + ... + 142423.

It is an arithmetic number, because the mean of its divisors is an integer number (58062480).

Almost surely, 2^1155715660 is an apocalyptic number.

1155715660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155715660 is an abundant number, since it is smaller than the sum of its proper divisors (1631283380).

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

1155715660 is a wasteful number, since it uses less digits than its factorization.

1155715660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276526 (or 276524 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 37.

The square root of 1155715660 is about 33995.8182722523. The cubic root of 1155715660 is about 1049.4224064422.

The spelling of 1155715660 in words is "one billion, one hundred fifty-five million, seven hundred fifteen thousand, six hundred sixty".