18904041 has 12 divisors (see below), whose sum is σ = 29406468. Its totient is φ = 11633184.

The previous prime is 18904037. The next prime is 18904057. The reversal of 18904041 is 14040981.

It can be written as a sum of positive squares in 2 ways, for example, as 7371225 + 11532816 = 2715^2 + 3396^2 .

It is not a de Polignac number, because 18904041 - 2² = 18904037 is a prime.

It is a super-2 number, since 2×18904041² = 714725532259362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18903996 and 18904014.

It is not an unprimeable number, because it can be changed into a prime (18904021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80670 + ... + 80903.

It is an arithmetic number, because the mean of its divisors is an integer number (2450539).

Almost surely, 2^18904041 is an apocalyptic number.

It is an amenable number.

18904041 is a deficient number, since it is larger than the sum of its proper divisors (10502427).

18904041 is a wasteful number, since it uses less digits than its factorization.

18904041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161592 (or 161589 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 18904041 is about 4347.8777581712. The cubic root of 18904041 is about 266.3901834031.

The spelling of 18904041 in words is "eighteen million, nine hundred four thousand, forty-one".