18482399431 has 2 divisors, whose sum is σ = 18482399432. Its totient is φ = 18482399430.

The previous prime is 18482399357. The next prime is 18482399437. The reversal of 18482399431 is 13499328481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18482399431 - 2⁹ = 18482398919 is a prime.

It is a super-2 number, since 2×18482399431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18482399437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9241199715 + 9241199716.

It is an arithmetic number, because the mean of its divisors is an integer number (9241199716).

Almost surely, 2^18482399431 is an apocalyptic number.

18482399431 is a deficient number, since it is larger than the sum of its proper divisors (1).

18482399431 is an equidigital number, since it uses as much as digits as its factorization.

18482399431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 52.

It can be divided in two parts, 184823994 and 31, that added together give a square (184824025 = 13595²).

The spelling of 18482399431 in words is "eighteen billion, four hundred eighty-two million, three hundred ninety-nine thousand, four hundred thirty-one".