198989098 has 72 divisors (see below), whose sum is σ = 387813636. Its totient is φ = 76285440.

The previous prime is 198989069. The next prime is 198989101. The reversal of 198989098 is 890989891.

It can be written as a sum of positive squares in 2 ways, for example, as 189971089 + 9018009 = 13783^2 + 3003^2 .

It is a super-2 number, since 2×198989098² = 79193322245707208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1150140 + ... + 1150312.

Almost surely, 2^198989098 is an apocalyptic number.

198989098 is a deficient number, since it is larger than the sum of its proper divisors (188824538).

198989098 is a wasteful number, since it uses less digits than its factorization.

198989098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 61.

The square root of 198989098 is about 14106.3495632286. The cubic root of 198989098 is about 583.8165844384.

The spelling of 198989098 in words is "one hundred ninety-eight million, nine hundred eighty-nine thousand, ninety-eight".