161873016 has 32 divisors (see below), whose sum is σ = 411320400. Its totient is φ = 53072640.

The previous prime is 161873009. The next prime is 161873017. The reversal of 161873016 is 610378161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161873017) 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, 53821 + ... + 56748.

Almost surely, 2^161873016 is an apocalyptic number.

It is an amenable number.

161873016 is an abundant number, since it is smaller than the sum of its proper divisors (249447384).

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

161873016 is a wasteful number, since it uses less digits than its factorization.

161873016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110639 (or 110635 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 161873016 is about 12722.9326807934. The cubic root of 161873016 is about 544.9937052832.

The spelling of 161873016 in words is "one hundred sixty-one million, eight hundred seventy-three thousand, sixteen".