385756387 has 2 divisors, whose sum is σ = 385756388. Its totient is φ = 385756386.

The previous prime is 385756303. The next prime is 385756429. The reversal of 385756387 is 783657583.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385756387 is a prime.

It is a super-2 number, since 2×385756387² = 297615980222587538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (385756087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192878193 + 192878194.

It is an arithmetic number, because the mean of its divisors is an integer number (192878194).

Almost surely, 2^385756387 is an apocalyptic number.

385756387 is a deficient number, since it is larger than the sum of its proper divisors (1).

385756387 is an equidigital number, since it uses as much as digits as its factorization.

385756387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 52.

The square root of 385756387 is about 19640.6819382627. The cubic root of 385756387 is about 727.9547348129.

The spelling of 385756387 in words is "three hundred eighty-five million, seven hundred fifty-six thousand, three hundred eighty-seven".