814227381 has 12 divisors (see below), whose sum is σ = 1283025120. Its totient is φ = 493471080.

The previous prime is 814227367. The next prime is 814227383. The reversal of 814227381 is 183722418.

It is not a de Polignac number, because 814227381 - 2⁹ = 814226869 is a prime.

It is a super-2 number, since 2×814227381² = 1325932455940238322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814227383) 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, 4112161 + ... + 4112358.

It is an arithmetic number, because the mean of its divisors is an integer number (106918760).

Almost surely, 2^814227381 is an apocalyptic number.

It is an amenable number.

814227381 is a deficient number, since it is larger than the sum of its proper divisors (468797739).

814227381 is a wasteful number, since it uses less digits than its factorization.

814227381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8224536 (or 8224533 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 814227381 is about 28534.6698070961. The cubic root of 814227381 is about 933.7885999860.

Adding to 814227381 its reverse (183722418), we get a palindrome (997949799).

The spelling of 814227381 in words is "eight hundred fourteen million, two hundred twenty-seven thousand, three hundred eighty-one".