1422636813 has 48 divisors (see below), whose sum is σ = 2254412160. Its totient is φ = 859248000.

The previous prime is 1422636781. The next prime is 1422636827. The reversal of 1422636813 is 3186362241.

1422636813 is a `hidden beast` number, since 1 + 4 + 2 + 2 + 636 + 8 + 13 = 666.

It is not a de Polignac number, because 1422636813 - 2⁵ = 1422636781 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422636833) 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 47 ways as a sum of consecutive naturals, for example, 1547568 + ... + 1548486.

It is an arithmetic number, because the mean of its divisors is an integer number (46966920).

Almost surely, 2^1422636813 is an apocalyptic number.

1422636813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1422636813 is a deficient number, since it is larger than the sum of its proper divisors (831775347).

1422636813 is a wasteful number, since it uses less digits than its factorization.

1422636813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170 (or 1167 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 1422636813 is about 37717.8580118225. The cubic root of 1422636813 is about 1124.6861512665.

The spelling of 1422636813 in words is "one billion, four hundred twenty-two million, six hundred thirty-six thousand, eight hundred thirteen".