1395826387493 has 2 divisors, whose sum is σ = 1395826387494. Its totient is φ = 1395826387492.

The previous prime is 1395826387363. The next prime is 1395826387541. The reversal of 1395826387493 is 3947836285931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 995139919489 + 400686468004 = 997567^2 + 632998^2 .

It is an emirp because it is prime and its reverse (3947836285931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1395826387493 - 2¹² = 1395826383397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1395826387993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697913193746 + 697913193747.

It is an arithmetic number, because the mean of its divisors is an integer number (697913193747).

Almost surely, 2^{1395826387493} is an apocalyptic number.

It is an amenable number.

1395826387493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1395826387493 is an equidigital number, since it uses as much as digits as its factorization.

1395826387493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 235146240, while the sum is 68.

The spelling of 1395826387493 in words is "one trillion, three hundred ninety-five billion, eight hundred twenty-six million, three hundred eighty-seven thousand, four hundred ninety-three".