18910064 has 10 divisors (see below), whose sum is σ = 36638280. Its totient is φ = 9455024.

The previous prime is 18910063. The next prime is 18910091. The reversal of 18910064 is 46001981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18910063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590924 + ... + 590955.

It is an arithmetic number, because the mean of its divisors is an integer number (3663828).

Almost surely, 2^18910064 is an apocalyptic number.

It is an amenable number.

18910064 is a deficient number, since it is larger than the sum of its proper divisors (17728216).

18910064 is a wasteful number, since it uses less digits than its factorization.

18910064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181887 (or 1181881 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 18910064 is about 4348.5703397784. The cubic root of 18910064 is about 266.4184718469.

The spelling of 18910064 in words is "eighteen million, nine hundred ten thousand, sixty-four".