161670195 has 64 divisors (see below), whose sum is σ = 296110080. Its totient is φ = 83664000.

The previous prime is 161670137. The next prime is 161670203. The reversal of 161670195 is 591076161.

It is a happy number.

It is not a de Polignac number, because 161670195 - 2⁸ = 161669939 is a prime.

It is a super-2 number, since 2×161670195² = 52274503902676050, which contains 22 as substring.

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 in 63 ways as a sum of consecutive naturals, for example, 968002 + ... + 968168.

It is an arithmetic number, because the mean of its divisors is an integer number (4626720).

Almost surely, 2^161670195 is an apocalyptic number.

161670195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161670195 is a deficient number, since it is larger than the sum of its proper divisors (134439885).

161670195 is a wasteful number, since it uses less digits than its factorization.

161670195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 161670195 is about 12714.9594965930. The cubic root of 161670195 is about 544.7659910556.

The spelling of 161670195 in words is "one hundred sixty-one million, six hundred seventy thousand, one hundred ninety-five".