1385809907 has 2 divisors, whose sum is σ = 1385809908. Its totient is φ = 1385809906.

The previous prime is 1385809889. The next prime is 1385809913. The reversal of 1385809907 is 7099085831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1385809907 - 2¹⁰ = 1385808883 is a prime.

It is not a weakly prime, because it can be changed into another prime (1385809987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692904953 + 692904954.

It is an arithmetic number, because the mean of its divisors is an integer number (692904954).

Almost surely, 2^1385809907 is an apocalyptic number.

1385809907 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385809907 is an equidigital number, since it uses as much as digits as its factorization.

1385809907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 1385809907 is about 37226.4678286834. The cubic root of 1385809907 is about 1114.8965047013.

The spelling of 1385809907 in words is "one billion, three hundred eighty-five million, eight hundred nine thousand, nine hundred seven".