18755213137 has 2 divisors, whose sum is σ = 18755213138. Its totient is φ = 18755213136.

The previous prime is 18755213117. The next prime is 18755213167. The reversal of 18755213137 is 73131255781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15134904576 + 3620308561 = 123024^2 + 60169^2 .

It is a cyclic number.

It is not a de Polignac number, because 18755213137 - 2¹⁵ = 18755180369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18755213093 and 18755213102.

It is not a weakly prime, because it can be changed into another prime (18755213107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9377606568 + 9377606569.

It is an arithmetic number, because the mean of its divisors is an integer number (9377606569).

Almost surely, 2^18755213137 is an apocalyptic number.

It is an amenable number.

18755213137 is a deficient number, since it is larger than the sum of its proper divisors (1).

18755213137 is an equidigital number, since it uses as much as digits as its factorization.

18755213137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 43.

The spelling of 18755213137 in words is "eighteen billion, seven hundred fifty-five million, two hundred thirteen thousand, one hundred thirty-seven".