18437522790 has 32 divisors (see below), whose sum is σ = 44283697920. Its totient is φ = 4912934624.

The previous prime is 18437522777. The next prime is 18437522797. The reversal of 18437522790 is 9722573481.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18437522797) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 193404 + ... + 272543.

It is an arithmetic number, because the mean of its divisors is an integer number (1383865560).

Almost surely, 2^18437522790 is an apocalyptic number.

18437522790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18437522790 is an abundant number, since it is smaller than the sum of its proper divisors (25846175130).

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

18437522790 is a wasteful number, since it uses less digits than its factorization.

18437522790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467276.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 18437522790 in words is "eighteen billion, four hundred thirty-seven million, five hundred twenty-two thousand, seven hundred ninety".