1385913983 has 2 divisors, whose sum is σ = 1385913984. Its totient is φ = 1385913982.

The previous prime is 1385913943. The next prime is 1385914007. The reversal of 1385913983 is 3893195831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1385913983 - 2²² = 1381719679 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1385913943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692956991 + 692956992.

It is an arithmetic number, because the mean of its divisors is an integer number (692956992).

Almost surely, 2^1385913983 is an apocalyptic number.

1385913983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385913983 is an equidigital number, since it uses as much as digits as its factorization.

1385913983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 50.

The square root of 1385913983 is about 37227.8656788165. The cubic root of 1385913983 is about 1114.9244140279.

The spelling of 1385913983 in words is "one billion, three hundred eighty-five million, nine hundred thirteen thousand, nine hundred eighty-three".