18836213337 has 32 divisors (see below), whose sum is σ = 28088511360. Its totient is φ = 12475270080.

The previous prime is 18836213323. The next prime is 18836213351. The reversal of 18836213337 is 73331263881.

18836213337 is a `hidden beast` number, since 18 + 8 + 3 + 621 + 3 + 3 + 3 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (18836213323) and next prime (18836213351).

It is not a de Polignac number, because 18836213337 - 2⁴ = 18836213321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18836213292 and 18836213301.

It is not an unprimeable number, because it can be changed into a prime (18836213387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8419183 + ... + 8421419.

It is an arithmetic number, because the mean of its divisors is an integer number (877765980).

Almost surely, 2^18836213337 is an apocalyptic number.

It is an amenable number.

18836213337 is a deficient number, since it is larger than the sum of its proper divisors (9252298023).

18836213337 is a wasteful number, since it uses less digits than its factorization.

18836213337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150 (or 4144 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The spelling of 18836213337 in words is "eighteen billion, eight hundred thirty-six million, two hundred thirteen thousand, three hundred thirty-seven".