161245892 has 12 divisors (see below), whose sum is σ = 282433536. Its totient is φ = 80550600.

The previous prime is 161245871. The next prime is 161245937. The reversal of 161245892 is 298542161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12908 + ... + 22115.

It is an arithmetic number, because the mean of its divisors is an integer number (23536128).

Almost surely, 2^161245892 is an apocalyptic number.

It is an amenable number.

161245892 is a deficient number, since it is larger than the sum of its proper divisors (121187644).

161245892 is a wasteful number, since it uses less digits than its factorization.

161245892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36178 (or 36176 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 161245892 is about 12698.2633458280. The cubic root of 161245892 is about 544.2889945514.

The spelling of 161245892 in words is "one hundred sixty-one million, two hundred forty-five thousand, eight hundred ninety-two".