18275032439 has 2 divisors, whose sum is σ = 18275032440. Its totient is φ = 18275032438.

The previous prime is 18275032429. The next prime is 18275032507. The reversal of 18275032439 is 93423057281.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18275032439 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18275032439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18275032429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9137516219 + 9137516220.

It is an arithmetic number, because the mean of its divisors is an integer number (9137516220).

Almost surely, 2^18275032439 is an apocalyptic number.

18275032439 is a deficient number, since it is larger than the sum of its proper divisors (1).

18275032439 is an equidigital number, since it uses as much as digits as its factorization.

18275032439 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 44.

The spelling of 18275032439 in words is "eighteen billion, two hundred seventy-five million, thirty-two thousand, four hundred thirty-nine".