18829440186 has 32 divisors (see below), whose sum is σ = 38309042880. Its totient is φ = 6168185856.

The previous prime is 18829440181. The next prime is 18829440233. The reversal of 18829440186 is 68104492881.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18829440181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1550490 + ... + 1562586.

It is an arithmetic number, because the mean of its divisors is an integer number (1197157590).

Almost surely, 2^18829440186 is an apocalyptic number.

18829440186 is an abundant number, since it is smaller than the sum of its proper divisors (19479602694).

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

18829440186 is a wasteful number, since it uses less digits than its factorization.

18829440186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16558.

The product of its (nonzero) digits is 884736, while the sum is 51.

The spelling of 18829440186 in words is "eighteen billion, eight hundred twenty-nine million, four hundred forty thousand, one hundred eighty-six".