198772102 has 4 divisors (see below), whose sum is σ = 298158156. Its totient is φ = 99386050.

The previous prime is 198772069. The next prime is 198772111. The reversal of 198772102 is 201277891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201277891 = 37 ⋅5439943.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49693024 + ... + 49693027.

It is an arithmetic number, because the mean of its divisors is an integer number (74539539).

Almost surely, 2^198772102 is an apocalyptic number.

198772102 is a deficient number, since it is larger than the sum of its proper divisors (99386054).

198772102 is an equidigital number, since it uses as much as digits as its factorization.

198772102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99386053.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 198772102 is about 14098.6560352397. The cubic root of 198772102 is about 583.6042914992.

The spelling of 198772102 in words is "one hundred ninety-eight million, seven hundred seventy-two thousand, one hundred two".