1299298536 has 128 divisors (see below), whose sum is σ = 3787852800. Its totient is φ = 412128000.

The previous prime is 1299298523. The next prime is 1299298537. The reversal of 1299298536 is 6358929921.

It is a happy number.

1299298536 is a `hidden beast` number, since 12 + 9 + 9 + 2 + 98 + 536 = 666.

1299298536 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1299298537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 406866 + ... + 410046.

It is an arithmetic number, because the mean of its divisors is an integer number (29592600).

Almost surely, 2^1299298536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1299298536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1893926400).

1299298536 is an abundant number, since it is smaller than the sum of its proper divisors (2488554264).

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

1299298536 is a wasteful number, since it uses less digits than its factorization.

1299298536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288 (or 3278 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 1299298536 is about 36045.7838866073. The cubic root of 1299298536 is about 1091.1965470210.

The spelling of 1299298536 in words is "one billion, two hundred ninety-nine million, two hundred ninety-eight thousand, five hundred thirty-six".