1165971680 has 48 divisors (see below), whose sum is σ = 2849605920. Its totient is φ = 450304512.

The previous prime is 1165971661. The next prime is 1165971701. The reversal of 1165971680 is 861795611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121004 + ... + 130283.

It is an arithmetic number, because the mean of its divisors is an integer number (59366790).

Almost surely, 2^1165971680 is an apocalyptic number.

1165971680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1165971680 is an abundant number, since it is smaller than the sum of its proper divisors (1683634240).

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

1165971680 is a wasteful number, since it uses less digits than its factorization.

1165971680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251331 (or 251323 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 1165971680 is about 34146.3274745616. The cubic root of 1165971680 is about 1052.5175206732.

The spelling of 1165971680 in words is "one billion, one hundred sixty-five million, nine hundred seventy-one thousand, six hundred eighty".