385916513 has 2 divisors, whose sum is σ = 385916514. Its totient is φ = 385916512.

The previous prime is 385916423. The next prime is 385916539. The reversal of 385916513 is 315619583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251634769 + 134281744 = 15863^2 + 11588^2 .

It is a cyclic number.

It is not a de Polignac number, because 385916513 - 2¹⁶ = 385850977 is a prime.

It is not a weakly prime, because it can be changed into another prime (385916213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192958256 + 192958257.

It is an arithmetic number, because the mean of its divisors is an integer number (192958257).

Almost surely, 2^385916513 is an apocalyptic number.

It is an amenable number.

385916513 is a deficient number, since it is larger than the sum of its proper divisors (1).

385916513 is an equidigital number, since it uses as much as digits as its factorization.

385916513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 41.

The square root of 385916513 is about 19644.7579012825. The cubic root of 385916513 is about 728.0554446210.

The spelling of 385916513 in words is "three hundred eighty-five million, nine hundred sixteen thousand, five hundred thirteen".