1393457845249 has 4 divisors (see below), whose sum is σ = 1393681988164. Its totient is φ = 1393233702336.

The previous prime is 1393457845237. The next prime is 1393457845253. The reversal of 1393457845249 is 9425487543931.

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 410470862400 + 982986982849 = 640680^2 + 991457^2 .

It is a cyclic number.

It is not a de Polignac number, because 1393457845249 - 2¹¹ = 1393457843201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1393457848249) 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, 112062132 + ... + 112074565.

It is an arithmetic number, because the mean of its divisors is an integer number (348420497041).

Almost surely, 2^{1393457845249} is an apocalyptic number.

It is an amenable number.

1393457845249 is a deficient number, since it is larger than the sum of its proper divisors (224142915).

1393457845249 is an equidigital number, since it uses as much as digits as its factorization.

1393457845249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224142914.

The product of its digits is 130636800, while the sum is 64.

The spelling of 1393457845249 in words is "one trillion, three hundred ninety-three billion, four hundred fifty-seven million, eight hundred forty-five thousand, two hundred forty-nine".