18302040732 has 12 divisors (see below), whose sum is σ = 42704761736. Its totient is φ = 6100680240.

The previous prime is 18302040721. The next prime is 18302040749. The reversal of 18302040732 is 23704020381.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 18302040732.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 762585019 + ... + 762585042.

Almost surely, 2^18302040732 is an apocalyptic number.

18302040732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18302040732 is an abundant number, since it is smaller than the sum of its proper divisors (24402721004).

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

18302040732 is a wasteful number, since it uses less digits than its factorization.

18302040732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525170068 (or 1525170066 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The spelling of 18302040732 in words is "eighteen billion, three hundred two million, forty thousand, seven hundred thirty-two".