8158403385 has 24 divisors (see below), whose sum is σ = 15426800064. Its totient is φ = 3955589280.

The previous prime is 8158403359. The next prime is 8158403387. The reversal of 8158403385 is 5833048518.

It is not a de Polignac number, because 8158403385 - 2⁷ = 8158403257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8158403385.

It is not an unprimeable number, because it can be changed into a prime (8158403387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8240317 + ... + 8241306.

It is an arithmetic number, because the mean of its divisors is an integer number (642783336).

Almost surely, 2^8158403385 is an apocalyptic number.

It is an amenable number.

8158403385 is a deficient number, since it is larger than the sum of its proper divisors (7268396679).

8158403385 is a wasteful number, since it uses less digits than its factorization.

8158403385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16481645 (or 16481642 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 8158403385 is about 90323.8804801919. The cubic root of 8158403385 is about 2013.1141042712.

The spelling of 8158403385 in words is "eight billion, one hundred fifty-eight million, four hundred three thousand, three hundred eighty-five".