18545970 has 16 divisors (see below), whose sum is σ = 44510400. Its totient is φ = 4945584.

The previous prime is 18545953. The next prime is 18545983. The reversal of 18545970 is 7954581.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309070 + ... + 309129.

It is an arithmetic number, because the mean of its divisors is an integer number (2781900).

Almost surely, 2^18545970 is an apocalyptic number.

18545970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18545970 is an abundant number, since it is smaller than the sum of its proper divisors (25964430).

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

18545970 is a wasteful number, since it uses less digits than its factorization.

18545970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618209.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 18545970 is about 4306.5032218727. The cubic root of 18545970 is about 264.6975069826.

The spelling of 18545970 in words is "eighteen million, five hundred forty-five thousand, nine hundred seventy".