161245674 has 16 divisors (see below), whose sum is σ = 358323840. Its totient is φ = 53748540.

The previous prime is 161245639. The next prime is 161245717. The reversal of 161245674 is 476542161.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1492962 + ... + 1493069.

It is an arithmetic number, because the mean of its divisors is an integer number (22395240).

Almost surely, 2^161245674 is an apocalyptic number.

161245674 is an abundant number, since it is smaller than the sum of its proper divisors (197078166).

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

161245674 is a wasteful number, since it uses less digits than its factorization.

161245674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986042 (or 2986036 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 161245674 is about 12698.2547619742. The cubic root of 161245674 is about 544.2887492634.

The spelling of 161245674 in words is "one hundred sixty-one million, two hundred forty-five thousand, six hundred seventy-four".