1395490793 has 2 divisors, whose sum is σ = 1395490794. Its totient is φ = 1395490792.

The previous prime is 1395490787. The next prime is 1395490843. The reversal of 1395490793 is 3970945931.

It is an a-pointer prime, because the next prime (1395490843) can be obtained adding 1395490793 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1393379584 + 2111209 = 37328^2 + 1453^2 .

It is a cyclic number.

It is not a de Polignac number, because 1395490793 - 2¹⁶ = 1395425257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1395492793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697745396 + 697745397.

It is an arithmetic number, because the mean of its divisors is an integer number (697745397).

Almost surely, 2^1395490793 is an apocalyptic number.

It is an amenable number.

1395490793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1395490793 is an equidigital number, since it uses as much as digits as its factorization.

1395490793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 918540, while the sum is 50.

The square root of 1395490793 is about 37356.2684565790. The cubic root of 1395490793 is about 1117.4866026784.

The spelling of 1395490793 in words is "one billion, three hundred ninety-five million, four hundred ninety thousand, seven hundred ninety-three".