198874634 has 72 divisors (see below), whose sum is σ = 381288960. Its totient is φ = 77347872.

The previous prime is 198874633. The next prime is 198874649. The reversal of 198874634 is 436478891.

198874634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×198874634² = 79102240097267912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198874633) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1565879 + ... + 1566005.

It is an arithmetic number, because the mean of its divisors is an integer number (5295680).

Almost surely, 2^198874634 is an apocalyptic number.

198874634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

198874634 is a deficient number, since it is larger than the sum of its proper divisors (182414326).

198874634 is a wasteful number, since it uses less digits than its factorization.

198874634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 184 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 198874634 is about 14102.2917995622. The cubic root of 198874634 is about 583.7046205173.

The spelling of 198874634 in words is "one hundred ninety-eight million, eight hundred seventy-four thousand, six hundred thirty-four".