18247677732 has 42 divisors (see below), whose sum is σ = 47878259478. Its totient is φ = 6082558272.

The previous prime is 18247677697. The next prime is 18247677769. The reversal of 18247677732 is 23777674281.

It can be written as a sum of positive squares in only one way, i.e., 16740219456 + 1507458276 = 129384^2 + 38826^2 .

It is a super-2 number, since 2×18247677732² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 3125973 + ... + 3131804.

It is an arithmetic number, because the mean of its divisors is an integer number (1139958559).

Almost surely, 2^18247677732 is an apocalyptic number.

18247677732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18247677732 is an abundant number, since it is smaller than the sum of its proper divisors (29630581746).

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

18247677732 is an equidigital number, since it uses as much as digits as its factorization.

18247677732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6257799 (or 6257782 counting only the distinct ones).

The product of its digits is 5531904, while the sum is 54.

The spelling of 18247677732 in words is "eighteen billion, two hundred forty-seven million, six hundred seventy-seven thousand, seven hundred thirty-two".