18032490137 has 2 divisors, whose sum is σ = 18032490138. Its totient is φ = 18032490136.

The previous prime is 18032490017. The next prime is 18032490181. The reversal of 18032490137 is 73109423081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13763043856 + 4269446281 = 117316^2 + 65341^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18032490137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18032490137.

It is not a weakly prime, because it can be changed into another prime (18032495137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9016245068 + 9016245069.

It is an arithmetic number, because the mean of its divisors is an integer number (9016245069).

Almost surely, 2^18032490137 is an apocalyptic number.

It is an amenable number.

18032490137 is a deficient number, since it is larger than the sum of its proper divisors (1).

18032490137 is an equidigital number, since it uses as much as digits as its factorization.

18032490137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 18032490137 in words is "eighteen billion, thirty-two million, four hundred ninety thousand, one hundred thirty-seven".