198737970 has 16 divisors (see below), whose sum is σ = 476971200. Its totient is φ = 52996784.

The previous prime is 198737953. The next prime is 198737977. The reversal of 198737970 is 79737891.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (198737977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3312270 + ... + 3312329.

It is an arithmetic number, because the mean of its divisors is an integer number (29810700).

Almost surely, 2^198737970 is an apocalyptic number.

198737970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198737970 is an abundant number, since it is smaller than the sum of its proper divisors (278233230).

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

198737970 is a wasteful number, since it uses less digits than its factorization.

198737970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6624609.

The product of its (nonzero) digits is 666792, while the sum is 51.

The square root of 198737970 is about 14097.4455132836. The cubic root of 198737970 is about 583.5708851983.

The spelling of 198737970 in words is "one hundred ninety-eight million, seven hundred thirty-seven thousand, nine hundred seventy".