1395228293 has 2 divisors, whose sum is σ = 1395228294. Its totient is φ = 1395228292.

The previous prime is 1395228271. The next prime is 1395228299. The reversal of 1395228293 is 3928225931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1311743524 + 83484769 = 36218^2 + 9137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1395228293 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 (1395228299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697614146 + 697614147.

It is an arithmetic number, because the mean of its divisors is an integer number (697614147).

Almost surely, 2^1395228293 is an apocalyptic number.

It is an amenable number.

1395228293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1395228293 is an equidigital number, since it uses as much as digits as its factorization.

1395228293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 44.

The square root of 1395228293 is about 37352.7548247783. The cubic root of 1395228293 is about 1117.4165296906.

The spelling of 1395228293 in words is "one billion, three hundred ninety-five million, two hundred twenty-eight thousand, two hundred ninety-three".