1298712366 has 180 divisors, whose sum is σ = 3516807888. Its totient is φ = 357010416.

The previous prime is 1298712361. The next prime is 1298712367. The reversal of 1298712366 is 6632178921.

1298712366 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298712361) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 22012045 + ... + 22012103.

Almost surely, 2^1298712366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1298712366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1758403944).

1298712366 is an abundant number, since it is smaller than the sum of its proper divisors (2218095522).

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

1298712366 is an equidigital number, since it uses as much as digits as its factorization.

1298712366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 118 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 1298712366 is about 36037.6520600330. The cubic root of 1298712366 is about 1091.0324269531.

The spelling of 1298712366 in words is "one billion, two hundred ninety-eight million, seven hundred twelve thousand, three hundred sixty-six".