1155698180 has 144 divisors (see below), whose sum is σ = 3154314240. Its totient is φ = 346311936.

The previous prime is 1155698177. The next prime is 1155698207. The reversal of 1155698180 is 818965511.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 656141 + ... + 657899.

It is an arithmetic number, because the mean of its divisors is an integer number (21904960).

Almost surely, 2^1155698180 is an apocalyptic number.

1155698180 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 1155698180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1577157120).

1155698180 is an abundant number, since it is smaller than the sum of its proper divisors (1998616060).

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

1155698180 is a wasteful number, since it uses less digits than its factorization.

1155698180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826 (or 1805 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 44.

The square root of 1155698180 is about 33995.5611808365. The cubic root of 1155698180 is about 1049.4171156379.

The spelling of 1155698180 in words is "one billion, one hundred fifty-five million, six hundred ninety-eight thousand, one hundred eighty".