163662979 has 16 divisors (see below), whose sum is σ = 178970400. Its totient is φ = 149071104.

The previous prime is 163662953. The next prime is 163663001. The reversal of 163662979 is 979266361.

It is a cyclic number.

It is not a de Polignac number, because 163662979 - 2⁹ = 163662467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163662929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174199 + ... + 175135.

It is an arithmetic number, because the mean of its divisors is an integer number (11185650).

Almost surely, 2^163662979 is an apocalyptic number.

163662979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

163662979 is a deficient number, since it is larger than the sum of its proper divisors (15307421).

163662979 is a wasteful number, since it uses less digits than its factorization.

163662979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302.

The product of its digits is 734832, while the sum is 49.

The square root of 163662979 is about 12793.0832483807. The cubic root of 163662979 is about 546.9951605306.

The spelling of 163662979 in words is "one hundred sixty-three million, six hundred sixty-two thousand, nine hundred seventy-nine".