18242064850 has 24 divisors (see below), whose sum is σ = 33934457520. Its totient is φ = 7295919120.

The previous prime is 18242064847. The next prime is 18242064857. The reversal of 18242064850 is 5846024281.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18242064857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 505509 + ... + 540391.

It is an arithmetic number, because the mean of its divisors is an integer number (1413935730).

Almost surely, 2^18242064850 is an apocalyptic number.

18242064850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18242064850 is a deficient number, since it is larger than the sum of its proper divisors (15692392670).

18242064850 is a wasteful number, since it uses less digits than its factorization.

18242064850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45354 (or 45349 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 40.

The spelling of 18242064850 in words is "eighteen billion, two hundred forty-two million, sixty-four thousand, eight hundred fifty".