163839967 has 2 divisors, whose sum is σ = 163839968. Its totient is φ = 163839966.

The previous prime is 163839941. The next prime is 163840007. The reversal of 163839967 is 769938361.

It is a weak prime.

It is an emirp because it is prime and its reverse (769938361) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163839967 is a prime.

It is a super-2 number, since 2×163839967² = 53687069573122178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163839167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81919983 + 81919984.

It is an arithmetic number, because the mean of its divisors is an integer number (81919984).

Almost surely, 2^163839967 is an apocalyptic number.

163839967 is a deficient number, since it is larger than the sum of its proper divisors (1).

163839967 is an equidigital number, since it uses as much as digits as its factorization.

163839967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 52.

The square root of 163839967 is about 12799.9987109374. The cubic root of 163839967 is about 547.1922661988.

The spelling of 163839967 in words is "one hundred sixty-three million, eight hundred thirty-nine thousand, nine hundred sixty-seven".