18450616842 has 48 divisors (see below), whose sum is σ = 45694920960. Its totient is φ = 5270718816.

The previous prime is 18450616841. The next prime is 18450616871. The reversal of 18450616842 is 24861605481.

It is a happy number.

18450616842 is a `hidden beast` number, since 1 + 84 + 506 + 1 + 68 + 4 + 2 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18450616841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1261423 + ... + 1275965.

It is an arithmetic number, because the mean of its divisors is an integer number (951977520).

Almost surely, 2^18450616842 is an apocalyptic number.

18450616842 is an abundant number, since it is smaller than the sum of its proper divisors (27244304118).

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

18450616842 is a wasteful number, since it uses less digits than its factorization.

18450616842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24627 (or 24624 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 18450616842 in words is "eighteen billion, four hundred fifty million, six hundred sixteen thousand, eight hundred forty-two".