7418729891 has 2 divisors, whose sum is σ = 7418729892. Its totient is φ = 7418729890.

The previous prime is 7418729861. The next prime is 7418729893. The reversal of 7418729891 is 1989278147.

7418729891 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7418729891 - 2¹⁴ = 7418713507 is a prime.

Together with 7418729893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7418729893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3709364945 + 3709364946.

It is an arithmetic number, because the mean of its divisors is an integer number (3709364946).

Almost surely, 2^7418729891 is an apocalyptic number.

7418729891 is a deficient number, since it is larger than the sum of its proper divisors (1).

7418729891 is an equidigital number, since it uses as much as digits as its factorization.

7418729891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 56.

The square root of 7418729891 is about 86132.0491512886. The cubic root of 7418729891 is about 1950.3378674695.

The spelling of 7418729891 in words is "seven billion, four hundred eighteen million, seven hundred twenty-nine thousand, eight hundred ninety-one".