1155494160 has 140 divisors (see below), whose sum is σ = 4028146572. Its totient is φ = 308116224.

The previous prime is 1155494159. The next prime is 1155494203. The reversal of 1155494160 is 614945511.

1155494160 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 494 + 160 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 133541136 + 1021953024 = 11556^2 + 31968^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 48414 + ... + 68226.

Almost surely, 2^1155494160 is an apocalyptic number.

1155494160 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 1155494160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2014073286).

1155494160 is an abundant number, since it is smaller than the sum of its proper divisors (2872652412).

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

1155494160 is an equidigital number, since it uses as much as digits as its factorization.

1155494160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19844 (or 19823 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 1155494160 is about 33992.5603625264. The cubic root of 1155494160 is about 1049.3553594102.

The spelling of 1155494160 in words is "one billion, one hundred fifty-five million, four hundred ninety-four thousand, one hundred sixty".