161880982 has 16 divisors (see below), whose sum is σ = 250942032. Its totient is φ = 78271200.

The previous prime is 161880937. The next prime is 161880989. The reversal of 161880982 is 289088161.

161880982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161880989) 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, 633 + ... + 18004.

It is an arithmetic number, because the mean of its divisors is an integer number (15683877).

Almost surely, 2^161880982 is an apocalyptic number.

161880982 is a deficient number, since it is larger than the sum of its proper divisors (89061050).

161880982 is a wasteful number, since it uses less digits than its factorization.

161880982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18783.

The product of its (nonzero) digits is 55296, while the sum is 43.

The square root of 161880982 is about 12723.2457336955. The cubic root of 161880982 is about 545.0026451068.

The spelling of 161880982 in words is "one hundred sixty-one million, eight hundred eighty thousand, nine hundred eighty-two".