163964769 has 8 divisors (see below), whose sum is σ = 228124992. Its totient is φ = 104557200.

The previous prime is 163964761. The next prime is 163964771. The reversal of 163964769 is 967469361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163964769 - 2³ = 163964761 is a prime.

It is a super-2 number, since 2×163964769² = 53768890946446722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163964761) 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, 1188082 + ... + 1188219.

It is an arithmetic number, because the mean of its divisors is an integer number (28515624).

Almost surely, 2^163964769 is an apocalyptic number.

It is an amenable number.

163964769 is a deficient number, since it is larger than the sum of its proper divisors (64160223).

163964769 is a wasteful number, since it uses less digits than its factorization.

163964769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376327.

The product of its digits is 1469664, while the sum is 51.

The square root of 163964769 is about 12804.8728615321. The cubic root of 163964769 is about 547.3311687268.

The spelling of 163964769 in words is "one hundred sixty-three million, nine hundred sixty-four thousand, seven hundred sixty-nine".