161449656 has 16 divisors (see below), whose sum is σ = 403624200. Its totient is φ = 53816544.

The previous prime is 161449633. The next prime is 161449657. The reversal of 161449656 is 656944161.

161449656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161449657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3363511 + ... + 3363558.

Almost surely, 2^161449656 is an apocalyptic number.

It is an amenable number.

161449656 is an abundant number, since it is smaller than the sum of its proper divisors (242174544).

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

161449656 is a wasteful number, since it uses less digits than its factorization.

161449656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6727078 (or 6727074 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 161449656 is about 12706.2841145632. The cubic root of 161449656 is about 544.5181679733.

The spelling of 161449656 in words is "one hundred sixty-one million, four hundred forty-nine thousand, six hundred fifty-six".