1898112188 has 24 divisors (see below), whose sum is σ = 3812121600. Its totient is φ = 810070128.

The previous prime is 1898112163. The next prime is 1898112221. The reversal of 1898112188 is 8812118981.

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, 135128 + ... + 148511.

It is an arithmetic number, because the mean of its divisors is an integer number (158838400).

Almost surely, 2^1898112188 is an apocalyptic number.

It is an amenable number.

1898112188 is an abundant number, since it is smaller than the sum of its proper divisors (1914009412).

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

1898112188 is a wasteful number, since it uses less digits than its factorization.

1898112188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283889 (or 283887 counting only the distinct ones).

The product of its digits is 73728, while the sum is 47.

The square root of 1898112188 is about 43567.3293650185. The cubic root of 1898112188 is about 1238.1519879376.

The spelling of 1898112188 in words is "one billion, eight hundred ninety-eight million, one hundred twelve thousand, one hundred eighty-eight".