1299208680 has 512 divisors, whose sum is σ = 5723136000. Its totient is φ = 253808640.

The previous prime is 1299208679. The next prime is 1299208709. The reversal of 1299208680 is 868029921.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1413261 + ... + 1414179.

It is an arithmetic number, because the mean of its divisors is an integer number (11178000).

Almost surely, 2^1299208680 is an apocalyptic number.

1299208680 is a gapful number since it is divisible by the number (10) 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 1299208680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2861568000).

1299208680 is an abundant number, since it is smaller than the sum of its proper divisors (4423927320).

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

1299208680 is a wasteful number, since it uses less digits than its factorization.

1299208680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974 (or 964 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1299208680 is about 36044.5374502157. The cubic root of 1299208680 is about 1091.1713916994.

The spelling of 1299208680 in words is "one billion, two hundred ninety-nine million, two hundred eight thousand, six hundred eighty".