161675198 has 8 divisors (see below), whose sum is σ = 242570160. Its totient is φ = 80818480.

The previous prime is 161675179. The next prime is 161675233. The reversal of 161675198 is 891576161.

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

It is a super-2 number, since 2×161675198² = 52277739296678408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6218 + ... + 19026.

It is an arithmetic number, because the mean of its divisors is an integer number (30321270).

Almost surely, 2^161675198 is an apocalyptic number.

161675198 is a deficient number, since it is larger than the sum of its proper divisors (80894962).

161675198 is a wasteful number, since it uses less digits than its factorization.

161675198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19122.

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

The square root of 161675198 is about 12715.1562318361. The cubic root of 161675198 is about 544.7716103890.

The spelling of 161675198 in words is "one hundred sixty-one million, six hundred seventy-five thousand, one hundred ninety-eight".