163974379 has 4 divisors (see below), whose sum is σ = 164009376. Its totient is φ = 163939384.

The previous prime is 163974347. The next prime is 163974443. The reversal of 163974379 is 973479361.

It is a happy number.

163974379 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 cyclic number.

It is not a de Polignac number, because 163974379 - 2⁵ = 163974347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163974319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9139 + ... + 20284.

It is an arithmetic number, because the mean of its divisors is an integer number (41002344).

Almost surely, 2^163974379 is an apocalyptic number.

163974379 is a deficient number, since it is larger than the sum of its proper divisors (34997).

163974379 is an equidigital number, since it uses as much as digits as its factorization.

163974379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34996.

The product of its digits is 857304, while the sum is 49.

The square root of 163974379 is about 12805.2481038049. The cubic root of 163974379 is about 547.3418615722.

The spelling of 163974379 in words is "one hundred sixty-three million, nine hundred seventy-four thousand, three hundred seventy-nine".