1300137793 has 4 divisors (see below), whose sum is σ = 1308863700. Its totient is φ = 1291411888.

The previous prime is 1300137743. The next prime is 1300137823. The reversal of 1300137793 is 3977310031.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 98267569 + 1201870224 = 9913^2 + 34668^2 .

It is a cyclic number.

It is not a de Polignac number, because 1300137793 - 2²¹ = 1298040641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1300137743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4362730 + ... + 4363027.

It is an arithmetic number, because the mean of its divisors is an integer number (327215925).

Almost surely, 2^1300137793 is an apocalyptic number.

It is an amenable number.

1300137793 is a deficient number, since it is larger than the sum of its proper divisors (8725907).

1300137793 is an equidigital number, since it uses as much as digits as its factorization.

1300137793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8725906.

The product of its (nonzero) digits is 11907, while the sum is 34.

The square root of 1300137793 is about 36057.4235491112. The cubic root of 1300137793 is about 1091.4314422884.

The spelling of 1300137793 in words is "one billion, three hundred million, one hundred thirty-seven thousand, seven hundred ninety-three".