85838019 has 16 divisors (see below), whose sum is σ = 118538112. Its totient is φ = 55214208.

The previous prime is 85838017. The next prime is 85838021. The reversal of 85838019 is 91083858.

It is an interprime number because it is at equal distance from previous prime (85838017) and next prime (85838021).

It is not a de Polignac number, because 85838019 - 2¹ = 85838017 is a prime.

It is a super-2 number, since 2×85838019² = 14736331011688722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85838017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6699 + ... + 14715.

It is an arithmetic number, because the mean of its divisors is an integer number (7408632).

Almost surely, 2^85838019 is an apocalyptic number.

85838019 is a deficient number, since it is larger than the sum of its proper divisors (32700093).

85838019 is a wasteful number, since it uses less digits than its factorization.

85838019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8146.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 85838019 is about 9264.8809490462. The cubic root of 85838019 is about 441.1231961281.

The spelling of 85838019 in words is "eighty-five million, eight hundred thirty-eight thousand, nineteen".