7326709981 has 4 divisors (see below), whose sum is σ = 7352783964. Its totient is φ = 7300636000.

The previous prime is 7326709979. The next prime is 7326709991. The reversal of 7326709981 is 1899076237.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1899076237 = 31019 ⋅61223.

It can be written as a sum of positive squares in 2 ways, for example, as 2161413081 + 5165296900 = 46491^2 + 71870^2 .

It is a cyclic number.

It is not a de Polignac number, because 7326709981 - 2¹ = 7326709979 is a prime.

It is a super-2 number, since 2×7326709981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7326709921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13036570 + ... + 13037131.

It is an arithmetic number, because the mean of its divisors is an integer number (1838195991).

Almost surely, 2^7326709981 is an apocalyptic number.

It is an amenable number.

7326709981 is a deficient number, since it is larger than the sum of its proper divisors (26073983).

7326709981 is a wasteful number, since it uses less digits than its factorization.

7326709981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26073982.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 7326709981 is about 85596.2030758374. The cubic root of 7326709981 is about 1942.2404749828.

The spelling of 7326709981 in words is "seven billion, three hundred twenty-six million, seven hundred nine thousand, nine hundred eighty-one".