18650994 has 32 divisors (see below), whose sum is σ = 38301120. Its totient is φ = 6052800.

The previous prime is 18650993. The next prime is 18651007. The reversal of 18650994 is 49905681.

It is not an unprimeable number, because it can be changed into a prime (18650993) 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 15 ways as a sum of consecutive naturals, for example, 47752 + ... + 48140.

It is an arithmetic number, because the mean of its divisors is an integer number (1196910).

Almost surely, 2^18650994 is an apocalyptic number.

18650994 is an abundant number, since it is smaller than the sum of its proper divisors (19650126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18650994 is a wasteful number, since it uses less digits than its factorization.

18650994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 18650994 is about 4318.6796593403. The cubic root of 18650994 is about 265.1962187422.

The spelling of 18650994 in words is "eighteen million, six hundred fifty thousand, nine hundred ninety-four".