198907274 has 4 divisors (see below), whose sum is σ = 298360914. Its totient is φ = 99453636.

The previous prime is 198907271. The next prime is 198907283. The reversal of 198907274 is 472709891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 472709891 = 37 ⋅12775943.

It can be written as a sum of positive squares in only one way, i.e., 122257249 + 76650025 = 11057^2 + 8755^2 .

It is a super-2 number, since 2×198907274² = 79128207300222152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198907271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49726817 + ... + 49726820.

Almost surely, 2^198907274 is an apocalyptic number.

198907274 is a deficient number, since it is larger than the sum of its proper divisors (99453640).

198907274 is an equidigital number, since it uses as much as digits as its factorization.

198907274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99453639.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 198907274 is about 14103.4490107917. The cubic root of 198907274 is about 583.7365519846.

The spelling of 198907274 in words is "one hundred ninety-eight million, nine hundred seven thousand, two hundred seventy-four".