862818381 has 12 divisors (see below), whose sum is σ = 1286496640. Its totient is φ = 556656840.

The previous prime is 862818377. The next prime is 862818413. The reversal of 862818381 is 183818268.

862818381 is a `hidden beast` number, since 8 + 628 + 18 + 3 + 8 + 1 = 666.

862818381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 862818381 - 2² = 862818377 is a prime.

It is a super-2 number, since 2×862818381² = 1488911117182922322, 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 (862818311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1545991 + ... + 1546548.

Almost surely, 2^862818381 is an apocalyptic number.

It is an amenable number.

862818381 is a deficient number, since it is larger than the sum of its proper divisors (423678259).

862818381 is a wasteful number, since it uses less digits than its factorization.

862818381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092576 (or 3092573 counting only the distinct ones).

The product of its digits is 147456, while the sum is 45.

The square root of 862818381 is about 29373.7702891542. The cubic root of 862818381 is about 952.0062425296.

The spelling of 862818381 in words is "eight hundred sixty-two million, eight hundred eighteen thousand, three hundred eighty-one".