18726402980 has 24 divisors (see below), whose sum is σ = 39328042488. Its totient is φ = 7490066688.

The previous prime is 18726402967. The next prime is 18726402991. The reversal of 18726402980 is 8920462781.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18181696 + 18708221284 = 4264^2 + 136778^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513512 + ... + 548768.

It is an arithmetic number, because the mean of its divisors is an integer number (1638668437).

Almost surely, 2^18726402980 is an apocalyptic number.

18726402980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18726402980 is an abundant number, since it is smaller than the sum of its proper divisors (20601639508).

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

18726402980 is a wasteful number, since it uses less digits than its factorization.

18726402980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61823 (or 61821 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 18726402980 in words is "eighteen billion, seven hundred twenty-six million, four hundred two thousand, nine hundred eighty".