18258706845 has 24 divisors (see below), whose sum is σ = 31661707896. Its totient is φ = 9733890048.

The previous prime is 18258706819. The next prime is 18258706847. The reversal of 18258706845 is 54860785281.

18258706845 is a `hidden beast` number, since 18 + 2 + 587 + 0 + 6 + 8 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4093184484 + 14165522361 = 63978^2 + 119019^2 .

It is not a de Polignac number, because 18258706845 - 2⁸ = 18258706589 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18258706791 and 18258706800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18258706847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24829 + ... + 192701.

It is an arithmetic number, because the mean of its divisors is an integer number (1319237829).

Almost surely, 2^18258706845 is an apocalyptic number.

18258706845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18258706845 is a deficient number, since it is larger than the sum of its proper divisors (13403001051).

18258706845 is a wasteful number, since it uses less digits than its factorization.

18258706845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170301 (or 170298 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 54.

The spelling of 18258706845 in words is "eighteen billion, two hundred fifty-eight million, seven hundred six thousand, eight hundred forty-five".