161995002 has 32 divisors (see below), whose sum is σ = 354836160. Its totient is φ = 48998400.

The previous prime is 161994971. The next prime is 161995013. The reversal of 161995002 is 200599161.

161995002 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12999 + ... + 22202.

It is an arithmetic number, because the mean of its divisors is an integer number (11088630).

Almost surely, 2^161995002 is an apocalyptic number.

161995002 is an abundant number, since it is smaller than the sum of its proper divisors (192841158).

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

161995002 is a wasteful number, since it uses less digits than its factorization.

161995002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35278.

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 161995002 is about 12727.7257198606. The cubic root of 161995002 is about 545.1305716385.

The spelling of 161995002 in words is "one hundred sixty-one million, nine hundred ninety-five thousand, two".