7381879997 has 2 divisors, whose sum is σ = 7381879998. Its totient is φ = 7381879996.

The previous prime is 7381879993. The next prime is 7381880041. The reversal of 7381879997 is 7999781837.

7381879997 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4450090681 + 2931789316 = 66709^2 + 54146^2 .

It is an emirp because it is prime and its reverse (7999781837) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7381879997 - 2² = 7381879993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7381879993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3690939998 + 3690939999.

It is an arithmetic number, because the mean of its divisors is an integer number (3690939999).

Almost surely, 2^7381879997 is an apocalyptic number.

It is an amenable number.

7381879997 is a deficient number, since it is larger than the sum of its proper divisors (1).

7381879997 is an equidigital number, since it uses as much as digits as its factorization.

7381879997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48009024, while the sum is 68.

The square root of 7381879997 is about 85917.8677400691. The cubic root of 7381879997 is about 1947.1033035135.

The spelling of 7381879997 in words is "seven billion, three hundred eighty-one million, eight hundred seventy-nine thousand, nine hundred ninety-seven".