161670194 has 8 divisors (see below), whose sum is σ = 277148928. Its totient is φ = 69287220.

The previous prime is 161670137. The next prime is 161670203. The reversal of 161670194 is 491076161.

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

It is a super-2 number, since 2×161670194² = 52274503255995272, which contains 22 as substring.

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, 5773922 + ... + 5773949.

It is an arithmetic number, because the mean of its divisors is an integer number (34643616).

Almost surely, 2^161670194 is an apocalyptic number.

161670194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161670194 is a deficient number, since it is larger than the sum of its proper divisors (115478734).

161670194 is a wasteful number, since it uses less digits than its factorization.

161670194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11547880.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 161670194 is about 12714.9594572692. The cubic root of 161670194 is about 544.7659899324.

The spelling of 161670194 in words is "one hundred sixty-one million, six hundred seventy thousand, one hundred ninety-four".