18949210 has 32 divisors (see below), whose sum is σ = 39134592. Its totient is φ = 6471360.

The previous prime is 18949181. The next prime is 18949211. The reversal of 18949210 is 1294981.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (18949211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29149 + ... + 29791.

It is an arithmetic number, because the mean of its divisors is an integer number (1222956).

Almost surely, 2^18949210 is an apocalyptic number.

18949210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18949210 is an abundant number, since it is smaller than the sum of its proper divisors (20185382).

18949210 is a wasteful number, since it uses less digits than its factorization.

18949210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 18949210 is about 4353.0690323035. The cubic root of 18949210 is about 266.6021840615.

The spelling of 18949210 in words is "eighteen million, nine hundred forty-nine thousand, two hundred ten".