18005075 has 24 divisors (see below), whose sum is σ = 24547536. Its totient is φ = 12992000.

The previous prime is 18005047. The next prime is 18005101. The reversal of 18005075 is 57050081.

It is not a de Polignac number, because 18005075 - 2¹⁸ = 17742931 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

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, 63935 + ... + 64215.

It is an arithmetic number, because the mean of its divisors is an integer number (1022814).

Almost surely, 2^18005075 is an apocalyptic number.

18005075 is a deficient number, since it is larger than the sum of its proper divisors (6542461).

18005075 is a wasteful number, since it uses less digits than its factorization.

18005075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 530 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 18005075 is about 4243.2387394536. The cubic root of 18005075 is about 262.0987672224.

The spelling of 18005075 in words is "eighteen million, five thousand, seventy-five".