161145168 has 40 divisors (see below), whose sum is σ = 417943488. Its totient is φ = 53501952.

The previous prime is 161145167. The next prime is 161145169. The reversal of 161145168 is 861541161.

It is an interprime number because it is at equal distance from previous prime (161145167) and next prime (161145169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161145167) 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, 5805 + ... + 18867.

Almost surely, 2^161145168 is an apocalyptic number.

It is an amenable number.

161145168 is an abundant number, since it is smaller than the sum of its proper divisors (256798320).

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

161145168 is a wasteful number, since it uses less digits than its factorization.

161145168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13331 (or 13325 counting only the distinct ones).

The product of its digits is 5760, while the sum is 33.

The square root of 161145168 is about 12694.2966721280. The cubic root of 161145168 is about 544.1756389320.

The spelling of 161145168 in words is "one hundred sixty-one million, one hundred forty-five thousand, one hundred sixty-eight".