18879947026 has 16 divisors (see below), whose sum is σ = 29554144704. Its totient is φ = 9028646704.

The previous prime is 18879947011. The next prime is 18879947027. The reversal of 18879947026 is 62074997881.

It is not an unprimeable number, because it can be changed into a prime (18879947027) 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 7 ways as a sum of consecutive naturals, for example, 863805 + ... + 885391.

It is an arithmetic number, because the mean of its divisors is an integer number (1847134044).

Almost surely, 2^18879947026 is an apocalyptic number.

18879947026 is a deficient number, since it is larger than the sum of its proper divisors (10674197678).

18879947026 is a wasteful number, since it uses less digits than its factorization.

18879947026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40625.

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 18879947026 in words is "eighteen billion, eight hundred seventy-nine million, nine hundred forty-seven thousand, twenty-six".