814517385 has 16 divisors (see below), whose sum is σ = 1421703360. Its totient is φ = 394917440.

The previous prime is 814517383. The next prime is 814517387. The reversal of 814517385 is 583715418.

It is an interprime number because it is at equal distance from previous prime (814517383) and next prime (814517387).

It is not a de Polignac number, because 814517385 - 2¹ = 814517383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (814517383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2468070 + ... + 2468399.

It is an arithmetic number, because the mean of its divisors is an integer number (88856460).

Almost surely, 2^814517385 is an apocalyptic number.

It is an amenable number.

814517385 is a deficient number, since it is larger than the sum of its proper divisors (607185975).

814517385 is a wasteful number, since it uses less digits than its factorization.

814517385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4936488.

The product of its digits is 134400, while the sum is 42.

The square root of 814517385 is about 28539.7509624734. The cubic root of 814517385 is about 933.8994495641.

The spelling of 814517385 in words is "eight hundred fourteen million, five hundred seventeen thousand, three hundred eighty-five".