161080002 has 20 divisors (see below), whose sum is σ = 360938886. Its totient is φ = 53693280.

The previous prime is 161079991. The next prime is 161080019. The reversal of 161080002 is 200080161.

It can be written as a sum of positive squares in only one way, i.e., 120362841 + 40717161 = 10971^2 + 6381^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 496999 + ... + 497322.

Almost surely, 2^161080002 is an apocalyptic number.

161080002 is an abundant number, since it is smaller than the sum of its proper divisors (199858884).

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

161080002 is an equidigital number, since it uses as much as digits as its factorization.

161080002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994335 (or 994326 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 161080002 is about 12691.7296693556. The cubic root of 161080002 is about 544.1022754107.

The spelling of 161080002 in words is "one hundred sixty-one million, eighty thousand, two".