161947068 has 24 divisors (see below), whose sum is σ = 381411072. Its totient is φ = 53477424.

The previous prime is 161947063. The next prime is 161947087. The reversal of 161947068 is 860749161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161947061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61780 + ... + 64347.

It is an arithmetic number, because the mean of its divisors is an integer number (15892128).

Almost surely, 2^161947068 is an apocalyptic number.

It is an amenable number.

161947068 is an abundant number, since it is smaller than the sum of its proper divisors (219464004).

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

161947068 is a wasteful number, since it uses less digits than its factorization.

161947068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126241 (or 126239 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 161947068 is about 12725.8425261355. The cubic root of 161947068 is about 545.0767986491.

The spelling of 161947068 in words is "one hundred sixty-one million, nine hundred forty-seven thousand, sixty-eight".