1279161792 has 84 divisors (see below), whose sum is σ = 3674531640. Its totient is φ = 425452032.

The previous prime is 1279161791. The next prime is 1279161797. The reversal of 1279161792 is 2971619721.

1279161792 is a `hidden beast` number, since 1 + 27 + 9 + 1 + 617 + 9 + 2 = 666.

It is a super-2 number, since 2×1279161792² = 3272509780225302528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279161791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 291003 + ... + 295365.

Almost surely, 2^1279161792 is an apocalyptic number.

1279161792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1279161792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1837265820).

1279161792 is an abundant number, since it is smaller than the sum of its proper divisors (2395369848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1279161792 is a wasteful number, since it uses less digits than its factorization.

1279161792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4890 (or 4877 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The square root of 1279161792 is about 35765.3714086685. The cubic root of 1279161792 is about 1085.5299900348.

The spelling of 1279161792 in words is "one billion, two hundred seventy-nine million, one hundred sixty-one thousand, seven hundred ninety-two".