1298536616794 has 4 divisors (see below), whose sum is σ = 1947804925194. Its totient is φ = 649268308396.

The previous prime is 1298536616737. The next prime is 1298536616801. The reversal of 1298536616794 is 4976166358921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 941165798769 + 357370818025 = 970137^2 + 597805^2 .

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324634154197 + ... + 324634154200.

Almost surely, 2^{1298536616794} is an apocalyptic number.

1298536616794 is a deficient number, since it is larger than the sum of its proper divisors (649268308400).

1298536616794 is an equidigital number, since it uses as much as digits as its factorization.

1298536616794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649268308399.

The product of its digits is 117573120, while the sum is 67.

The spelling of 1298536616794 in words is "one trillion, two hundred ninety-eight billion, five hundred thirty-six million, six hundred sixteen thousand, seven hundred ninety-four".