198874274079 has 8 divisors (see below), whose sum is σ = 285563060272. Its totient is φ = 122384168640.

The previous prime is 198874274063. The next prime is 198874274089. The reversal of 198874274079 is 970472478891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 198874274079 - 2⁴ = 198874274063 is a prime.

It is a super-2 number, since 2×198874274079² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198874274059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2549670142 + ... + 2549670219.

It is an arithmetic number, because the mean of its divisors is an integer number (35695382534).

Almost surely, 2^198874274079 is an apocalyptic number.

198874274079 is a deficient number, since it is larger than the sum of its proper divisors (86688786193).

198874274079 is a wasteful number, since it uses less digits than its factorization.

198874274079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5099340377.

The product of its (nonzero) digits is 56899584, while the sum is 66.

The spelling of 198874274079 in words is "one hundred ninety-eight billion, eight hundred seventy-four million, two hundred seventy-four thousand, seventy-nine".