18673909325 has 6 divisors (see below), whose sum is σ = 23155647594. Its totient is φ = 14939127440.

The previous prime is 18673909279. The next prime is 18673909337. The reversal of 18673909325 is 52390937681.

It can be written as a sum of positive squares in 3 ways, for example, as 35652841 + 18638256484 = 5971^2 + 136522^2 .

It is a de Polignac number, because none of the positive numbers 2^k-18673909325 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 373478162 + ... + 373478211.

It is an arithmetic number, because the mean of its divisors is an integer number (3859274599).

Almost surely, 2^18673909325 is an apocalyptic number.

It is an amenable number.

18673909325 is a deficient number, since it is larger than the sum of its proper divisors (4481738269).

18673909325 is an equidigital number, since it uses as much as digits as its factorization.

18673909325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746956383 (or 746956378 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 18673909325 in words is "eighteen billion, six hundred seventy-three million, nine hundred nine thousand, three hundred twenty-five".