18946904 has 16 divisors (see below), whose sum is σ = 35589120. Its totient is φ = 9456480.

The previous prime is 18946903. The next prime is 18946919. The reversal of 18946904 is 40964981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18946901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3497 + ... + 7079.

It is an arithmetic number, because the mean of its divisors is an integer number (2224320).

Almost surely, 2^18946904 is an apocalyptic number.

It is an amenable number.

18946904 is a deficient number, since it is larger than the sum of its proper divisors (16642216).

18946904 is a wasteful number, since it uses less digits than its factorization.

18946904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250 (or 4246 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 18946904 is about 4352.8041536462. The cubic root of 18946904 is about 266.5913690183.

The spelling of 18946904 in words is "eighteen million, nine hundred forty-six thousand, nine hundred four".