1180961520 has 160 divisors (see below), whose sum is σ = 3737856000. Its totient is φ = 308385792.

The previous prime is 1180961477. The next prime is 1180961539. The reversal of 1180961520 is 251690811.

It is a super-2 number, since 2×1180961520² = 2789340223441420800, which contains 22 as substring.

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, 3772884 + ... + 3773196.

It is an arithmetic number, because the mean of its divisors is an integer number (23361600).

Almost surely, 2^1180961520 is an apocalyptic number.

1180961520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1180961520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1868928000).

1180961520 is an abundant number, since it is smaller than the sum of its proper divisors (2556894480).

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

1180961520 is a wasteful number, since it uses less digits than its factorization.

1180961520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 601 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 1180961520 is about 34365.1206894432. The cubic root of 1180961520 is about 1057.0087496930.

The spelling of 1180961520 in words is "one billion, one hundred eighty million, nine hundred sixty-one thousand, five hundred twenty".