18739534607 has 2 divisors, whose sum is σ = 18739534608. Its totient is φ = 18739534606.

The previous prime is 18739534591. The next prime is 18739534669. The reversal of 18739534607 is 70643593781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18739534607 - 2⁴ = 18739534591 is a prime.

It is a super-3 number, since 3×18739534607³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18739534507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9369767303 + 9369767304.

It is an arithmetic number, because the mean of its divisors is an integer number (9369767304).

Almost surely, 2^18739534607 is an apocalyptic number.

18739534607 is a deficient number, since it is larger than the sum of its proper divisors (1).

18739534607 is an equidigital number, since it uses as much as digits as its factorization.

18739534607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 18739534607 in words is "eighteen billion, seven hundred thirty-nine million, five hundred thirty-four thousand, six hundred seven".