18885018190 has 8 divisors (see below), whose sum is σ = 33993032760. Its totient is φ = 7554007272.

The previous prime is 18885018149. The next prime is 18885018193. The reversal of 18885018190 is 9181058881.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18885018190² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18885018193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944250900 + ... + 944250919.

It is an arithmetic number, because the mean of its divisors is an integer number (4249129095).

Almost surely, 2^18885018190 is an apocalyptic number.

18885018190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18885018190 is a deficient number, since it is larger than the sum of its proper divisors (15108014570).

18885018190 is a wasteful number, since it uses less digits than its factorization.

18885018190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888501826.

The product of its (nonzero) digits is 184320, while the sum is 49.

The spelling of 18885018190 in words is "eighteen billion, eight hundred eighty-five million, eighteen thousand, one hundred ninety".