161342756 has 24 divisors (see below), whose sum is σ = 299856480. Its totient is φ = 75745152.

The previous prime is 161342717. The next prime is 161342761. The reversal of 161342756 is 657243161.

161342756 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, 806 + ... + 17981.

It is an arithmetic number, because the mean of its divisors is an integer number (12494020).

Almost surely, 2^161342756 is an apocalyptic number.

It is an amenable number.

161342756 is a deficient number, since it is larger than the sum of its proper divisors (138513724).

161342756 is a wasteful number, since it uses less digits than its factorization.

161342756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18923 (or 18921 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 161342756 is about 12702.0768380608. The cubic root of 161342756 is about 544.3979615768.

The spelling of 161342756 in words is "one hundred sixty-one million, three hundred forty-two thousand, seven hundred fifty-six".