18559292340 has 48 divisors (see below), whose sum is σ = 54701075520. Its totient is φ = 4688663040.

The previous prime is 18559292317. The next prime is 18559292357. The reversal of 18559292340 is 4329295581.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18559292340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8138901 + ... + 8141180.

It is an arithmetic number, because the mean of its divisors is an integer number (1139605740).

Almost surely, 2^18559292340 is an apocalyptic number.

18559292340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18559292340 is an abundant number, since it is smaller than the sum of its proper divisors (36141783180).

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

18559292340 is a wasteful number, since it uses less digits than its factorization.

18559292340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16280112 (or 16280110 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 18559292340 in words is "eighteen billion, five hundred fifty-nine million, two hundred ninety-two thousand, three hundred forty".