198162775 has 12 divisors (see below), whose sum is σ = 249184944. Its totient is φ = 156296000.

The previous prime is 198162739. The next prime is 198162781. The reversal of 198162775 is 577261891.

It is a happy number.

It is not a de Polignac number, because 198162775 - 2¹⁵ = 198130007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54046 + ... + 57595.

It is an arithmetic number, because the mean of its divisors is an integer number (20765412).

Almost surely, 2^198162775 is an apocalyptic number.

198162775 is a deficient number, since it is larger than the sum of its proper divisors (51022169).

198162775 is a wasteful number, since it uses less digits than its factorization.

198162775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111722 (or 111717 counting only the distinct ones).

The product of its digits is 211680, while the sum is 46.

The square root of 198162775 is about 14077.0300489841. The cubic root of 198162775 is about 583.0073434814.

The spelling of 198162775 in words is "one hundred ninety-eight million, one hundred sixty-two thousand, seven hundred seventy-five".