6942215826 has 144 divisors (see below), whose sum is σ = 19451996928. Its totient is φ = 1771761600.

The previous prime is 6942215821. The next prime is 6942215849. The reversal of 6942215826 is 6285122496.

6942215826 is a `hidden beast` number, since 6 + 9 + 42 + 21 + 582 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (6942215821) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 345681 + ... + 365211.

It is an arithmetic number, because the mean of its divisors is an integer number (135083312).

Almost surely, 2^6942215826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6942215826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9725998464).

6942215826 is an abundant number, since it is smaller than the sum of its proper divisors (12509781102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6942215826 is a wasteful number, since it uses less digits than its factorization.

6942215826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19597 (or 19587 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 6942215826 is about 83319.9605496786. The cubic root of 6942215826 is about 1907.6529585840.

The spelling of 6942215826 in words is "six billion, nine hundred forty-two million, two hundred fifteen thousand, eight hundred twenty-six".