161740146 has 8 divisors (see below), whose sum is σ = 323480304. Its totient is φ = 53913380.

The previous prime is 161740129. The next prime is 161740169. The reversal of 161740146 is 641047161.

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

161740146 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, 13478340 + ... + 13478351.

It is an arithmetic number, because the mean of its divisors is an integer number (40435038).

Almost surely, 2^161740146 is an apocalyptic number.

161740146 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.

161740146 is a wasteful number, since it uses less digits than its factorization.

161740146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26956696.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 161740146 is about 12717.7099353618. The cubic root of 161740146 is about 544.8445489930.

The spelling of 161740146 in words is "one hundred sixty-one million, seven hundred forty thousand, one hundred forty-six".