18961160 has 16 divisors (see below), whose sum is σ = 42662700. Its totient is φ = 7584448.

The previous prime is 18961153. The next prime is 18961169. The reversal of 18961160 is 6116981.

It can be written as a sum of positive squares in 2 ways, for example, as 18957316 + 3844 = 4354^2 + 62^2 .

It is not an unprimeable number, because it can be changed into a prime (18961169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236975 + ... + 237054.

Almost surely, 2^18961160 is an apocalyptic number.

18961160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18961160 is an abundant number, since it is smaller than the sum of its proper divisors (23701540).

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

18961160 is a wasteful number, since it uses less digits than its factorization.

18961160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474040 (or 474036 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 18961160 is about 4354.4414107897. The cubic root of 18961160 is about 266.6582150099.

The spelling of 18961160 in words is "eighteen million, nine hundred sixty-one thousand, one hundred sixty".