18120045190 has 32 divisors (see below), whose sum is σ = 35720364960. Its totient is φ = 6577077504.

The previous prime is 18120045121. The next prime is 18120045199. The reversal of 18120045190 is 9154002181.

It is a happy number.

It is a super-2 number, since 2×18120045190² (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 (18120045199) 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, 1173559 + ... + 1188898.

It is an arithmetic number, because the mean of its divisors is an integer number (1116261405).

Almost surely, 2^18120045190 is an apocalyptic number.

18120045190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18120045190 is a deficient number, since it is larger than the sum of its proper divisors (17600319770).

18120045190 is a wasteful number, since it uses less digits than its factorization.

18120045190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362536.

The product of its (nonzero) digits is 2880, while the sum is 31.

The spelling of 18120045190 in words is "eighteen billion, one hundred twenty million, forty-five thousand, one hundred ninety".