18012755 has 8 divisors (see below), whose sum is σ = 21638400. Its totient is φ = 14394816.

The previous prime is 18012737. The next prime is 18012763. The reversal of 18012755 is 55721081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18012755 - 2⁶ = 18012691 is a prime.

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, 6926 + ... + 9164.

It is an arithmetic number, because the mean of its divisors is an integer number (2704800).

Almost surely, 2^18012755 is an apocalyptic number.

18012755 is a deficient number, since it is larger than the sum of its proper divisors (3625645).

18012755 is a wasteful number, since it uses less digits than its factorization.

18012755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3853.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 18012755 is about 4244.1436120848. The cubic root of 18012755 is about 262.1360276873.

The spelling of 18012755 in words is "eighteen million, twelve thousand, seven hundred fifty-five".