198892642 has 16 divisors (see below), whose sum is σ = 321524280. Its totient is φ = 91729152.

The previous prime is 198892637. The next prime is 198892667. The reversal of 198892642 is 246298891.

It can be written as a sum of positive squares in 4 ways, for example, as 194351481 + 4541161 = 13941^2 + 2131^2 .

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, 58378 + ... + 61690.

Almost surely, 2^198892642 is an apocalyptic number.

198892642 is a deficient number, since it is larger than the sum of its proper divisors (122631638).

198892642 is a wasteful number, since it uses less digits than its factorization.

198892642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5637.

The product of its digits is 497664, while the sum is 49.

The square root of 198892642 is about 14102.9302628922. The cubic root of 198892642 is about 583.7222380407.

The spelling of 198892642 in words is "one hundred ninety-eight million, eight hundred ninety-two thousand, six hundred forty-two".