165180982 has 4 divisors (see below), whose sum is σ = 247771476. Its totient is φ = 82590490.

The previous prime is 165180971. The next prime is 165180991. The reversal of 165180982 is 289081561.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41295244 + ... + 41295247.

It is an arithmetic number, because the mean of its divisors is an integer number (61942869).

Almost surely, 2^165180982 is an apocalyptic number.

165180982 is a deficient number, since it is larger than the sum of its proper divisors (82590494).

165180982 is an equidigital number, since it uses as much as digits as its factorization.

165180982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82590493.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 165180982 is about 12852.2753627519. The cubic root of 165180982 is about 548.6811175760.

The spelling of 165180982 in words is "one hundred sixty-five million, one hundred eighty thousand, nine hundred eighty-two".