7812911436 has 96 divisors (see below), whose sum is σ = 20181509376. Its totient is φ = 2352240000.

The previous prime is 7812911413. The next prime is 7812911437. The reversal of 7812911436 is 6341192187.

It is a happy number.

It is a super-2 number, since 2×7812911436² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7812911437) 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 31 ways as a sum of consecutive naturals, for example, 2601936 + ... + 2604936.

It is an arithmetic number, because the mean of its divisors is an integer number (210224056).

Almost surely, 2^7812911436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7812911436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10090754688).

7812911436 is an abundant number, since it is smaller than the sum of its proper divisors (12368597940).

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

7812911436 is a wasteful number, since it uses less digits than its factorization.

7812911436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204 (or 3180 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 7812911436 is about 88390.6750511614. The cubic root of 7812911436 is about 1984.2861470922.

The spelling of 7812911436 in words is "seven billion, eight hundred twelve million, nine hundred eleven thousand, four hundred thirty-six".