18307314545 has 48 divisors (see below), whose sum is σ = 24547898160. Its totient is φ = 13091300352.

The previous prime is 18307314539. The next prime is 18307314581. The reversal of 18307314545 is 54541370381.

It can be written as a sum of positive squares in 24 ways, for example, as 9326151184 + 8981163361 = 96572^2 + 94769^2 .

It is not a de Polignac number, because 18307314545 - 2⁶ = 18307314481 is a prime.

It is a super-3 number, since 3×18307314545³ (a number of 32 digits) contains 333 as substring.

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 47 ways as a sum of consecutive naturals, for example, 7158407 + ... + 7160963.

It is an arithmetic number, because the mean of its divisors is an integer number (511414545).

Almost surely, 2^18307314545 is an apocalyptic number.

It is an amenable number.

18307314545 is a deficient number, since it is larger than the sum of its proper divisors (6240583615).

18307314545 is a wasteful number, since it uses less digits than its factorization.

18307314545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854 (or 2841 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 18307314545 in words is "eighteen billion, three hundred seven million, three hundred fourteen thousand, five hundred forty-five".