166316198 has 4 divisors (see below), whose sum is σ = 249474300. Its totient is φ = 83158098.

The previous prime is 166316167. The next prime is 166316231. The reversal of 166316198 is 891613661.

166316198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 891613661 = 31 ⋅28761731.

It is a super-2 number, since 2×166316198² = 55322155434350408, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41579048 + ... + 41579051.

It is an arithmetic number, because the mean of its divisors is an integer number (62368575).

Almost surely, 2^166316198 is an apocalyptic number.

166316198 is a deficient number, since it is larger than the sum of its proper divisors (83158102).

166316198 is an equidigital number, since it uses as much as digits as its factorization.

166316198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83158101.

The product of its digits is 46656, while the sum is 41.

The square root of 166316198 is about 12896.3637510734. The cubic root of 166316198 is about 549.9351967726.

The spelling of 166316198 in words is "one hundred sixty-six million, three hundred sixteen thousand, one hundred ninety-eight".