1393366853 has 2 divisors, whose sum is σ = 1393366854. Its totient is φ = 1393366852.

The previous prime is 1393366817. The next prime is 1393366859. The reversal of 1393366853 is 3586633931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 714920644 + 678446209 = 26738^2 + 26047^2 .

It is a cyclic number.

It is not a de Polignac number, because 1393366853 - 2⁶ = 1393366789 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1393366798 and 1393366807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1393366859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696683426 + 696683427.

It is an arithmetic number, because the mean of its divisors is an integer number (696683427).

Almost surely, 2^1393366853 is an apocalyptic number.

It is an amenable number.

1393366853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393366853 is an equidigital number, since it uses as much as digits as its factorization.

1393366853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 47.

The square root of 1393366853 is about 37327.8294707849. The cubic root of 1393366853 is about 1116.9193758002.

The spelling of 1393366853 in words is "one billion, three hundred ninety-three million, three hundred sixty-six thousand, eight hundred fifty-three".