850874381 has 4 divisors (see below), whose sum is σ = 972427872. Its totient is φ = 729320892.

The previous prime is 850874371. The next prime is 850874389. The reversal of 850874381 is 183478058.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 850874381 - 2¹⁸ = 850612237 is a prime.

It is a super-2 number, since 2×850874381² = 1447974424484266322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850874389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60776735 + ... + 60776748.

It is an arithmetic number, because the mean of its divisors is an integer number (243106968).

Almost surely, 2^850874381 is an apocalyptic number.

It is an amenable number.

850874381 is a deficient number, since it is larger than the sum of its proper divisors (121553491).

850874381 is a wasteful number, since it uses less digits than its factorization.

850874381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121553490.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 850874381 is about 29169.7511302376. The cubic root of 850874381 is about 947.5929389507.

The spelling of 850874381 in words is "eight hundred fifty million, eight hundred seventy-four thousand, three hundred eighty-one".