1898986144 has 24 divisors (see below), whose sum is σ = 4078505088. Its totient is φ = 863175360.

The previous prime is 1898986097. The next prime is 1898986153. The reversal of 1898986144 is 4416898981.

It is a super-2 number, since 2×1898986144² = 7212296750207977472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2697072 + ... + 2697775.

It is an arithmetic number, because the mean of its divisors is an integer number (169937712).

Almost surely, 2^1898986144 is an apocalyptic number.

It is an amenable number.

1898986144 is an abundant number, since it is smaller than the sum of its proper divisors (2179518944).

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

1898986144 is a wasteful number, since it uses less digits than its factorization.

1898986144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5394868 (or 5394860 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 58.

The square root of 1898986144 is about 43577.3581576488. The cubic root of 1898986144 is about 1238.3419880038.

The spelling of 1898986144 in words is "one billion, eight hundred ninety-eight million, nine hundred eighty-six thousand, one hundred forty-four".