850132385 has 4 divisors (see below), whose sum is σ = 1020158868. Its totient is φ = 680105904.

The previous prime is 850132373. The next prime is 850132399. The reversal of 850132385 is 583231058.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583231058 = 2 ⋅291615529.

It can be written as a sum of positive squares in 2 ways, for example, as 475632481 + 374499904 = 21809^2 + 19352^2 .

It is a cyclic number.

It is not a de Polignac number, because 850132385 - 2²² = 845938081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85013234 + ... + 85013243.

It is an arithmetic number, because the mean of its divisors is an integer number (255039717).

Almost surely, 2^850132385 is an apocalyptic number.

It is an amenable number.

850132385 is a deficient number, since it is larger than the sum of its proper divisors (170026483).

850132385 is a wasteful number, since it uses less digits than its factorization.

850132385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170026482.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 850132385 is about 29157.0297698514. The cubic root of 850132385 is about 947.3174127136.

The spelling of 850132385 in words is "eight hundred fifty million, one hundred thirty-two thousand, three hundred eighty-five".