18303657492 has 24 divisors (see below), whose sum is σ = 42718054176. Its totient is φ = 6099859168.

The previous prime is 18303657469. The next prime is 18303657509. The reversal of 18303657492 is 29475630381.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113163 + ... + 222290.

It is an arithmetic number, because the mean of its divisors is an integer number (1779918924).

It is a 1-persistent number, because it is pandigital, but 2⋅18303657492 = 36607314984 is not.

Almost surely, 2^18303657492 is an apocalyptic number.

18303657492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18303657492 is an abundant number, since it is smaller than the sum of its proper divisors (24414396684).

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

18303657492 is a wasteful number, since it uses less digits than its factorization.

18303657492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340007 (or 340005 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 18303657492 in words is "eighteen billion, three hundred three million, six hundred fifty-seven thousand, four hundred ninety-two".