1801181160 has 96 divisors (see below), whose sum is σ = 5949875880. Its totient is φ = 472435200.

The previous prime is 1801181117. The next prime is 1801181191. The reversal of 1801181160 is 611811081.

It can be written as a sum of positive squares in 4 ways, for example, as 1494440964 + 306740196 = 38658^2 + 17514^2 .

It is a super-2 number, since 2×1801181160² = 6488507142277891200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19051 + ... + 62970.

Almost surely, 2^1801181160 is an apocalyptic number.

1801181160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1801181160 is an abundant number, since it is smaller than the sum of its proper divisors (4148694720).

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

1801181160 is a wasteful number, since it uses less digits than its factorization.

1801181160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82099 (or 82092 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 27.

The square root of 1801181160 is about 42440.3246924432. The cubic root of 1801181160 is about 1216.7064169995.

The spelling of 1801181160 in words is "one billion, eight hundred one million, one hundred eighty-one thousand, one hundred sixty".