161994354 has 8 divisors (see below), whose sum is σ = 323988720. Its totient is φ = 53998116.

The previous prime is 161994331. The next prime is 161994389. The reversal of 161994354 is 453499161.

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

161994354 is an admirable 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, 13499524 + ... + 13499535.

It is an arithmetic number, because the mean of its divisors is an integer number (40498590).

Almost surely, 2^161994354 is an apocalyptic number.

161994354 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161994354 is a wasteful number, since it uses less digits than its factorization.

161994354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26999064.

The product of its digits is 116640, while the sum is 42.

The square root of 161994354 is about 12727.7002635983. The cubic root of 161994354 is about 545.1298447743.

The spelling of 161994354 in words is "one hundred sixty-one million, nine hundred ninety-four thousand, three hundred fifty-four".