198649254 has 16 divisors (see below), whose sum is σ = 400815792. Its totient is φ = 65630208.

The previous prime is 198649219. The next prime is 198649261. The reversal of 198649254 is 452946891.

It is a super-2 number, since 2×198649254² = 78923052229513032, which contains 22 as substring.

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, 145819 + ... + 147174.

It is an arithmetic number, because the mean of its divisors is an integer number (25050987).

Almost surely, 2^198649254 is an apocalyptic number.

198649254 is an abundant number, since it is smaller than the sum of its proper divisors (202166538).

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

198649254 is a wasteful number, since it uses less digits than its factorization.

198649254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293111.

The product of its digits is 622080, while the sum is 48.

The square root of 198649254 is about 14094.2986345543. The cubic root of 198649254 is about 583.4840375429.

The spelling of 198649254 in words is "one hundred ninety-eight million, six hundred forty-nine thousand, two hundred fifty-four".