1391445383 has 2 divisors, whose sum is σ = 1391445384. Its totient is φ = 1391445382.

The previous prime is 1391445353. The next prime is 1391445389. The reversal of 1391445383 is 3835441931.

It is a strong prime.

It is an emirp because it is prime and its reverse (3835441931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1391445383 - 2¹² = 1391441287 is a prime.

It is a super-2 number, since 2×1391445383² = 3872240507744033378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1391445383.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1391445389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695722691 + 695722692.

It is an arithmetic number, because the mean of its divisors is an integer number (695722692).

Almost surely, 2^1391445383 is an apocalyptic number.

1391445383 is a deficient number, since it is larger than the sum of its proper divisors (1).

1391445383 is an equidigital number, since it uses as much as digits as its factorization.

1391445383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 1391445383 is about 37302.0828238853. The cubic root of 1391445383 is about 1116.4057244391.

The spelling of 1391445383 in words is "one billion, three hundred ninety-one million, four hundred forty-five thousand, three hundred eighty-three".