18826980357 has 32 divisors (see below), whose sum is σ = 27557662720. Its totient is φ = 11388418560.

The previous prime is 18826980343. The next prime is 18826980413. The reversal of 18826980357 is 75308962881.

It is a happy number.

It is not a de Polignac number, because 18826980357 - 2⁷ = 18826980229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18826980297 and 18826980306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18826980307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116478 + ... + 226320.

It is an arithmetic number, because the mean of its divisors is an integer number (861176960).

Almost surely, 2^18826980357 is an apocalyptic number.

It is an amenable number.

18826980357 is a deficient number, since it is larger than the sum of its proper divisors (8730682363).

18826980357 is a wasteful number, since it uses less digits than its factorization.

18826980357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109993.

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 18826980357 in words is "eighteen billion, eight hundred twenty-six million, nine hundred eighty thousand, three hundred fifty-seven".