7187980823 has 2 divisors, whose sum is σ = 7187980824. Its totient is φ = 7187980822.

The previous prime is 7187980747. The next prime is 7187980847. The reversal of 7187980823 is 3280897817.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7187980823 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7187980123) 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 as a sum of consecutive naturals, namely, 3593990411 + 3593990412.

It is an arithmetic number, because the mean of its divisors is an integer number (3593990412).

Almost surely, 2^7187980823 is an apocalyptic number.

7187980823 is a deficient number, since it is larger than the sum of its proper divisors (1).

7187980823 is an equidigital number, since it uses as much as digits as its factorization.

7187980823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1354752, while the sum is 53.

The square root of 7187980823 is about 84781.9604809891. The cubic root of 7187980823 is about 1929.9036904163.

The spelling of 7187980823 in words is "seven billion, one hundred eighty-seven million, nine hundred eighty thousand, eight hundred twenty-three".