18061875 has 90 divisors (see below), whose sum is σ = 37159980. Its totient is φ = 8424000.

The previous prime is 18061873. The next prime is 18061889. The reversal of 18061875 is 57816081.

It is not a de Polignac number, because 18061875 - 2¹ = 18061873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18061873) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 950616 + ... + 950634.

Almost surely, 2^18061875 is an apocalyptic number.

18061875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18061875 is an abundant number, since it is smaller than the sum of its proper divisors (19098105).

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

18061875 is a wasteful number, since it uses less digits than its factorization.

18061875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 18061875 is about 4249.9264699522. The cubic root of 18061875 is about 262.3740892752.

The spelling of 18061875 in words is "eighteen million, sixty-one thousand, eight hundred seventy-five".