7226161820 has 24 divisors (see below), whose sum is σ = 15177848784. Its totient is φ = 2889910656.

The previous prime is 7226161807. The next prime is 7226161841. The reversal of 7226161820 is 281616227.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81872 + ... + 145448.

It is an arithmetic number, because the mean of its divisors is an integer number (632410366).

Almost surely, 2^7226161820 is an apocalyptic number.

It is an amenable number.

7226161820 is an abundant number, since it is smaller than the sum of its proper divisors (7951686964).

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

7226161820 is a wasteful number, since it uses less digits than its factorization.

7226161820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69269 (or 69267 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 7226161820 is about 85006.8339605705. The cubic root of 7226161820 is about 1933.3147347266.

The spelling of 7226161820 in words is "seven billion, two hundred twenty-six million, one hundred sixty-one thousand, eight hundred twenty".