1279107648 has 336 divisors, whose sum is σ = 4713037056. Its totient is φ = 322375680.

The previous prime is 1279107631. The next prime is 1279107673. The reversal of 1279107648 is 8467019721.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (336).

It is a super-2 number, since 2×1279107648² = 3272232750344183808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1205038 + ... + 1206098.

It is an arithmetic number, because the mean of its divisors is an integer number (14026896).

Almost surely, 2^1279107648 is an apocalyptic number.

1279107648 is a gapful number since it is divisible by the number (18) 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 1279107648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2356518528).

1279107648 is an abundant number, since it is smaller than the sum of its proper divisors (3433929408).

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

1279107648 is a wasteful number, since it uses less digits than its factorization.

1279107648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122 (or 1109 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 1279107648 is about 35764.6144673754. The cubic root of 1279107648 is about 1085.5146738161.

The spelling of 1279107648 in words is "one billion, two hundred seventy-nine million, one hundred seven thousand, six hundred forty-eight".