1279923163 has 8 divisors (see below), whose sum is σ = 1363521600. Its totient is φ = 1197948168.

The previous prime is 1279923157. The next prime is 1279923191. The reversal of 1279923163 is 3613299721.

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 1279923163 - 2¹⁷ = 1279792091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1279923103) 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, 404233 + ... + 407386.

It is an arithmetic number, because the mean of its divisors is an integer number (170440200).

Almost surely, 2^1279923163 is an apocalyptic number.

1279923163 is a deficient number, since it is larger than the sum of its proper divisors (83598437).

1279923163 is an equidigital number, since it uses as much as digits as its factorization.

1279923163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811721.

The product of its digits is 122472, while the sum is 43.

The square root of 1279923163 is about 35776.0137941610. The cubic root of 1279923163 is about 1085.7453204005.

The spelling of 1279923163 in words is "one billion, two hundred seventy-nine million, nine hundred twenty-three thousand, one hundred sixty-three".