1998610928 has 20 divisors (see below), whose sum is σ = 3966756528. Its totient is φ = 974931840.

The previous prime is 1998610919. The next prime is 1998610987. The reversal of 1998610928 is 8290168991.

It is a self number, because there is not a number n which added to its sum of digits gives 1998610928.

It is a congruent number.

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, 1522676 + ... + 1523987.

Almost surely, 2^1998610928 is an apocalyptic number.

It is an amenable number.

1998610928 is a deficient number, since it is larger than the sum of its proper divisors (1968145600).

1998610928 is a wasteful number, since it uses less digits than its factorization.

1998610928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046712 (or 3046706 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 53.

The square root of 1998610928 is about 44705.8265553831. The cubic root of 1998610928 is about 1259.6292954977.

The spelling of 1998610928 in words is "one billion, nine hundred ninety-eight million, six hundred ten thousand, nine hundred twenty-eight".