18480847431 has 32 divisors (see below), whose sum is σ = 25584007680. Its totient is φ = 11856813696.

The previous prime is 18480847403. The next prime is 18480847459. The reversal of 18480847431 is 13474808481.

It is an interprime number because it is at equal distance from previous prime (18480847403) and next prime (18480847459).

It is not a de Polignac number, because 18480847431 - 2¹³ = 18480839239 is a prime.

It is a super-2 number, since 2×18480847431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18480847471) 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 31 ways as a sum of consecutive naturals, for example, 10004950 + ... + 10006796.

It is an arithmetic number, because the mean of its divisors is an integer number (799500240).

Almost surely, 2^18480847431 is an apocalyptic number.

18480847431 is a deficient number, since it is larger than the sum of its proper divisors (7103160249).

18480847431 is a wasteful number, since it uses less digits than its factorization.

18480847431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823.

The product of its (nonzero) digits is 688128, while the sum is 48.

The spelling of 18480847431 in words is "eighteen billion, four hundred eighty million, eight hundred forty-seven thousand, four hundred thirty-one".