7421453813 has 2 divisors, whose sum is σ = 7421453814. Its totient is φ = 7421453812.

The previous prime is 7421453759. The next prime is 7421453833. The reversal of 7421453813 is 3183541247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6062646769 + 1358807044 = 77863^2 + 36862^2 .

It is a cyclic number.

It is not a de Polignac number, because 7421453813 - 2⁶ = 7421453749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7421453833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710726906 + 3710726907.

It is an arithmetic number, because the mean of its divisors is an integer number (3710726907).

Almost surely, 2^7421453813 is an apocalyptic number.

It is an amenable number.

7421453813 is a deficient number, since it is larger than the sum of its proper divisors (1).

7421453813 is an equidigital number, since it uses as much as digits as its factorization.

7421453813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 38.

The square root of 7421453813 is about 86147.8601765592. The cubic root of 7421453813 is about 1950.5765389686.

The spelling of 7421453813 in words is "seven billion, four hundred twenty-one million, four hundred fifty-three thousand, eight hundred thirteen".