862133881 has 12 divisors (see below), whose sum is σ = 1021815972. Its totient is φ = 725026848.

The previous prime is 862133861. The next prime is 862133887. The reversal of 862133881 is 188331268.

It can be written as a sum of positive squares in 2 ways, for example, as 663577600 + 198556281 = 25760^2 + 14091^2 .

It is not a de Polignac number, because 862133881 - 2⁹ = 862133369 is a prime.

It is a super-2 number, since 2×862133881² = 1486549657536244322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (862133887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163390 + ... + 168583.

It is an arithmetic number, because the mean of its divisors is an integer number (85151331).

Almost surely, 2^862133881 is an apocalyptic number.

It is an amenable number.

862133881 is a deficient number, since it is larger than the sum of its proper divisors (159682091).

862133881 is a wasteful number, since it uses less digits than its factorization.

862133881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332040 (or 332033 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 862133881 is about 29362.1164257620. The cubic root of 862133881 is about 951.7544241140.

The spelling of 862133881 in words is "eight hundred sixty-two million, one hundred thirty-three thousand, eight hundred eighty-one".