161013896 has 16 divisors (see below), whose sum is σ = 302568540. Its totient is φ = 80328960.

The previous prime is 161013877. The next prime is 161013911. The reversal of 161013896 is 698310161.

It can be written as a sum of positive squares in 2 ways, for example, as 152522500 + 8491396 = 12350^2 + 2914^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 18365 + ... + 25676.

Almost surely, 2^161013896 is an apocalyptic number.

It is an amenable number.

161013896 is a deficient number, since it is larger than the sum of its proper divisors (141554644).

161013896 is a wasteful number, since it uses less digits than its factorization.

161013896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44504 (or 44500 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 161013896 is about 12689.1251077448. The cubic root of 161013896 is about 544.0278334231.

The spelling of 161013896 in words is "one hundred sixty-one million, thirteen thousand, eight hundred ninety-six".