161394345 has 48 divisors (see below), whose sum is σ = 338532480. Its totient is φ = 69437952.

The previous prime is 161394307. The next prime is 161394353. The reversal of 161394345 is 543493161.

161394345 is a `hidden beast` number, since 1 + 613 + 9 + 4 + 34 + 5 = 666.

It is not a de Polignac number, because 161394345 - 2⁷ = 161394217 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9715 + ... + 20424.

It is an arithmetic number, because the mean of its divisors is an integer number (7052760).

Almost surely, 2^161394345 is an apocalyptic number.

161394345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161394345 is an abundant number, since it is smaller than the sum of its proper divisors (177138135).

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

161394345 is a wasteful number, since it uses less digits than its factorization.

161394345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30174 (or 30171 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 161394345 is about 12704.1074066618. The cubic root of 161394345 is about 544.4559787536.

The spelling of 161394345 in words is "one hundred sixty-one million, three hundred ninety-four thousand, three hundred forty-five".