18004761 has 20 divisors (see below), whose sum is σ = 28314000. Its totient is φ = 11370456.

The previous prime is 18004759. The next prime is 18004801. The reversal of 18004761 is 16740081.

It is a happy number.

It is not a de Polignac number, because 18004761 - 2¹ = 18004759 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18004061) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4311 + ... + 7388.

It is an arithmetic number, because the mean of its divisors is an integer number (1415700).

Almost surely, 2^18004761 is an apocalyptic number.

It is an amenable number.

18004761 is a deficient number, since it is larger than the sum of its proper divisors (10309239).

18004761 is a wasteful number, since it uses less digits than its factorization.

18004761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11730 (or 11721 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 18004761 is about 4243.2017392530. The cubic root of 18004761 is about 262.0972435873.

It can be divided in two parts, 1800 and 4761, that added together give a 8-th power (6561 = 3⁸).

The spelling of 18004761 in words is "eighteen million, four thousand, seven hundred sixty-one".