198051974 has 8 divisors (see below), whose sum is σ = 297138240. Its totient is φ = 99005896.

The previous prime is 198051947. The next prime is 198051977. The reversal of 198051974 is 479150891.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198051977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11627 + ... + 23049.

It is an arithmetic number, because the mean of its divisors is an integer number (37142280).

Almost surely, 2^198051974 is an apocalyptic number.

198051974 is a deficient number, since it is larger than the sum of its proper divisors (99086266).

198051974 is a wasteful number, since it uses less digits than its factorization.

198051974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20094.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 198051974 is about 14073.0939739632. The cubic root of 198051974 is about 582.8986620533.

The spelling of 198051974 in words is "one hundred ninety-eight million, fifty-one thousand, nine hundred seventy-four".