18472516039 has 2 divisors, whose sum is σ = 18472516040. Its totient is φ = 18472516038.

The previous prime is 18472516037. The next prime is 18472516133. The reversal of 18472516039 is 93061527481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18472516039 - 2¹ = 18472516037 is a prime.

It is a super-2 number, since 2×18472516039² (a number of 21 digits) contains 22 as substring.

Together with 18472516037, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18472516039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18472516031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9236258019 + 9236258020.

It is an arithmetic number, because the mean of its divisors is an integer number (9236258020).

It is a 1-persistent number, because it is pandigital, but 2⋅18472516039 = 36945032078 is not.

Almost surely, 2^18472516039 is an apocalyptic number.

18472516039 is a deficient number, since it is larger than the sum of its proper divisors (1).

18472516039 is an equidigital number, since it uses as much as digits as its factorization.

18472516039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 18472516039 in words is "eighteen billion, four hundred seventy-two million, five hundred sixteen thousand, thirty-nine".