161342786 has 16 divisors (see below), whose sum is σ = 272533248. Its totient is φ = 70971600.

The previous prime is 161342771. The next prime is 161342821. The reversal of 161342786 is 687243161.

161342786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 117605 + ... + 118968.

It is an arithmetic number, because the mean of its divisors is an integer number (17033328).

Almost surely, 2^161342786 is an apocalyptic number.

161342786 is a deficient number, since it is larger than the sum of its proper divisors (111190462).

161342786 is a wasteful number, since it uses less digits than its factorization.

161342786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236617.

The product of its digits is 48384, while the sum is 38.

The square root of 161342786 is about 12702.0780189700. The cubic root of 161342786 is about 544.3979953185.

The spelling of 161342786 in words is "one hundred sixty-one million, three hundred forty-two thousand, seven hundred eighty-six".