18850906 has 8 divisors (see below), whose sum is σ = 28357524. Its totient is φ = 9398400.

The previous prime is 18850903. The next prime is 18850921. The reversal of 18850906 is 60905881.

It can be written as a sum of positive squares in 2 ways, for example, as 17147881 + 1703025 = 4141^2 + 1305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18850903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12645 + ... + 14056.

Almost surely, 2^18850906 is an apocalyptic number.

18850906 is a deficient number, since it is larger than the sum of its proper divisors (9506618).

18850906 is a wasteful number, since it uses less digits than its factorization.

18850906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27056.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 18850906 is about 4341.7630059689. The cubic root of 18850906 is about 266.1403615973.

The spelling of 18850906 in words is "eighteen million, eight hundred fifty thousand, nine hundred six".