1298660000 has 120 divisors (see below), whose sum is σ = 3485934144. Its totient is φ = 472160000.

The previous prime is 1298659981. The next prime is 1298660021. The reversal of 1298660000 is 668921.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 217049 + ... + 222951.

Almost surely, 2^1298660000 is an apocalyptic number.

1298660000 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 1298660000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1742967072).

1298660000 is an abundant number, since it is smaller than the sum of its proper divisors (2187274144).

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

1298660000 is an equidigital number, since it uses as much as digits as its factorization.

1298660000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5944 (or 5921 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1298660000 is about 36036.9255070407. The cubic root of 1298660000 is about 1091.0177627432.

The spelling of 1298660000 in words is "one billion, two hundred ninety-eight million, six hundred sixty thousand".