18385810190 has 16 divisors (see below), whose sum is σ = 36103045680. Its totient is φ = 6685749120.

The previous prime is 18385810169. The next prime is 18385810211. The reversal of 18385810190 is 9101858381.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18385810169) and next prime (18385810211).

It is a super-2 number, since 2×18385810190² (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, 83571755 + ... + 83571974.

It is an arithmetic number, because the mean of its divisors is an integer number (2256440355).

Almost surely, 2^18385810190 is an apocalyptic number.

18385810190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18385810190 is a deficient number, since it is larger than the sum of its proper divisors (17717235490).

18385810190 is a wasteful number, since it uses less digits than its factorization.

18385810190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167143747.

The product of its (nonzero) digits is 69120, while the sum is 44.

The spelling of 18385810190 in words is "eighteen billion, three hundred eighty-five million, eight hundred ten thousand, one hundred ninety".