7822135389 has 16 divisors (see below), whose sum is σ = 10885017600. Its totient is φ = 4987090416.

The previous prime is 7822135361. The next prime is 7822135393. The reversal of 7822135389 is 9835312287.

It is a happy number.

7822135389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7822135389 - 2⁷ = 7822135261 is a prime.

It is a super-2 number, since 2×7822135389² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7822135589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 695392 + ... + 706550.

It is an arithmetic number, because the mean of its divisors is an integer number (680313600).

Almost surely, 2^7822135389 is an apocalyptic number.

It is an amenable number.

7822135389 is a deficient number, since it is larger than the sum of its proper divisors (3062882211).

7822135389 is a wasteful number, since it uses less digits than its factorization.

7822135389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21344.

The product of its digits is 725760, while the sum is 48.

The square root of 7822135389 is about 88442.8368439186. The cubic root of 7822135389 is about 1985.0667252493.

The spelling of 7822135389 in words is "seven billion, eight hundred twenty-two million, one hundred thirty-five thousand, three hundred eighty-nine".