1299616260 has 24 divisors (see below), whose sum is σ = 3638925696. Its totient is φ = 346564320.

The previous prime is 1299616247. The next prime is 1299616261. The reversal of 1299616260 is 626169921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1299616261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10830076 + ... + 10830195.

It is an arithmetic number, because the mean of its divisors is an integer number (151621904).

Almost surely, 2^1299616260 is an apocalyptic number.

1299616260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1299616260 is an abundant number, since it is smaller than the sum of its proper divisors (2339309436).

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

1299616260 is a wasteful number, since it uses less digits than its factorization.

1299616260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21660283 (or 21660281 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 1299616260 is about 36050.1908455420. The cubic root of 1299616260 is about 1091.2854850302.

The spelling of 1299616260 in words is "one billion, two hundred ninety-nine million, six hundred sixteen thousand, two hundred sixty".