18906195 has 32 divisors (see below), whose sum is σ = 37716480. Its totient is φ = 7856640.

The previous prime is 18906131. The next prime is 18906203. The reversal of 18906195 is 59160981.

It is not a de Polignac number, because 18906195 - 2⁶ = 18906131 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7030 + ... + 9339.

It is an arithmetic number, because the mean of its divisors is an integer number (1178640).

Almost surely, 2^18906195 is an apocalyptic number.

18906195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18906195 is a deficient number, since it is larger than the sum of its proper divisors (18810285).

18906195 is a wasteful number, since it uses less digits than its factorization.

18906195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16395.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 18906195 is about 4348.1254581716. The cubic root of 18906195 is about 266.4003008636.

The spelling of 18906195 in words is "eighteen million, nine hundred six thousand, one hundred ninety-five".