18514186806 has 16 divisors (see below), whose sum is σ = 37035903024. Its totient is φ = 6170140704.

The previous prime is 18514186759. The next prime is 18514186837. The reversal of 18514186806 is 60868141581.

It is a super-2 number, since 2×18514186806² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281505 + ... + 340988.

It is an arithmetic number, because the mean of its divisors is an integer number (2314743939).

Almost surely, 2^18514186806 is an apocalyptic number.

18514186806 is an abundant number, since it is smaller than the sum of its proper divisors (18521716218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18514186806 is a wasteful number, since it uses less digits than its factorization.

18514186806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627455.

The product of its (nonzero) digits is 368640, while the sum is 48.

The spelling of 18514186806 in words is "eighteen billion, five hundred fourteen million, one hundred eighty-six thousand, eight hundred six".