7922602081 has 3 divisors (see below), whose sum is σ = 7922691091. Its totient is φ = 7922513072.

The previous prime is 7922602073. The next prime is 7922602087. The reversal of 7922602081 is 1802062297.

The square root of 7922602081 is 89009.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 4595619681 + 3326982400 = 67791^2 + 57680^2 .

It is not a de Polignac number, because 7922602081 - 2³ = 7922602073 is a prime.

It is a super-2 number, since 2×7922602081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7922602081.

It is not an unprimeable number, because it can be changed into a prime (7922602087) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 44505 + ... + 133513.

Almost surely, 2^7922602081 is an apocalyptic number.

7922602081 is the 89009-th square number.

7922602081 is the 44505-th centered octagonal number.

It is an amenable number.

7922602081 is a deficient number, since it is larger than the sum of its proper divisors (89010).

7922602081 is an frugal number, since it uses more digits than its factorization.

7922602081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178018 (or 89009 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The cubic root of 7922602081 is about 1993.5292607613.

The spelling of 7922602081 in words is "seven billion, nine hundred twenty-two million, six hundred two thousand, eighty-one".