163744387 has 8 divisors (see below), whose sum is σ = 172958720. Its totient is φ = 154775880.

The previous prime is 163744379. The next prime is 163744393. The reversal of 163744387 is 783447361.

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

It is a cyclic number.

It is not a de Polignac number, because 163744387 - 2³ = 163744379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163744687) 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 7 ways as a sum of consecutive naturals, for example, 60087 + ... + 62752.

It is an arithmetic number, because the mean of its divisors is an integer number (21619840).

Almost surely, 2^163744387 is an apocalyptic number.

163744387 is a deficient number, since it is larger than the sum of its proper divisors (9214333).

163744387 is a wasteful number, since it uses less digits than its factorization.

163744387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122913.

The product of its digits is 338688, while the sum is 43.

The square root of 163744387 is about 12796.2645721320. The cubic root of 163744387 is about 547.0858395612.

The spelling of 163744387 in words is "one hundred sixty-three million, seven hundred forty-four thousand, three hundred eighty-seven".