1299989836794 has 32 divisors (see below), whose sum is σ = 2985622594560. Its totient is φ = 373202823600.

The previous prime is 1299989836793. The next prime is 1299989836801. The reversal of 1299989836794 is 4976389899921.

It is not an unprimeable number, because it can be changed into a prime (1299989836793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 518336002 + ... + 518338509.

It is an arithmetic number, because the mean of its divisors is an integer number (93300706080).

Almost surely, 2^{1299989836794} is an apocalyptic number.

1299989836794 is an abundant number, since it is smaller than the sum of its proper divisors (1685632757766).

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

1299989836794 is a wasteful number, since it uses less digits than its factorization.

1299989836794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036674546.

The product of its digits is 3809369088, while the sum is 84.

The spelling of 1299989836794 in words is "one trillion, two hundred ninety-nine billion, nine hundred eighty-nine million, eight hundred thirty-six thousand, seven hundred ninety-four".