163972982 has 4 divisors (see below), whose sum is σ = 245959476. Its totient is φ = 81986490.

The previous prime is 163972979. The next prime is 163972987. The reversal of 163972982 is 289279361.

It is a happy number.

163972982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163972987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40993244 + ... + 40993247.

It is an arithmetic number, because the mean of its divisors is an integer number (61489869).

Almost surely, 2^163972982 is an apocalyptic number.

163972982 is a deficient number, since it is larger than the sum of its proper divisors (81986494).

163972982 is an equidigital number, since it uses as much as digits as its factorization.

163972982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81986493.

The product of its digits is 326592, while the sum is 47.

The square root of 163972982 is about 12805.1935557414. The cubic root of 163972982 is about 547.3403071856.

The spelling of 163972982 in words is "one hundred sixty-three million, nine hundred seventy-two thousand, nine hundred eighty-two".