1279922148 has 60 divisors (see below), whose sum is σ = 3349407292. Its totient is φ = 426202560.

The previous prime is 1279922143. The next prime is 1279922173. The reversal of 1279922148 is 8412299721.

It can be written as a sum of positive squares in 2 ways, for example, as 1110089124 + 169833024 = 33318^2 + 13032^2 .

It is not an unprimeable number, because it can be changed into a prime (1279922143) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 523986 + ... + 526422.

Almost surely, 2^1279922148 is an apocalyptic number.

1279922148 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1279922148 is an abundant number, since it is smaller than the sum of its proper divisors (2069485144).

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

1279922148 is a wasteful number, since it uses less digits than its factorization.

1279922148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074 (or 4063 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 1279922148 is about 35775.9996086762. Note that the first 3 decimals coincide. The cubic root of 1279922148 is about 1085.7450333958.

The spelling of 1279922148 in words is "one billion, two hundred seventy-nine million, nine hundred twenty-two thousand, one hundred forty-eight".