7442213491 has 2 divisors, whose sum is σ = 7442213492. Its totient is φ = 7442213490.

The previous prime is 7442213473. The next prime is 7442213507. The reversal of 7442213491 is 1943122447.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7442213491 - 2¹³ = 7442205299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7442213491.

It is not a weakly prime, because it can be changed into another prime (7442213461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3721106745 + 3721106746.

It is an arithmetic number, because the mean of its divisors is an integer number (3721106746).

Almost surely, 2^7442213491 is an apocalyptic number.

7442213491 is a deficient number, since it is larger than the sum of its proper divisors (1).

7442213491 is an equidigital number, since it uses as much as digits as its factorization.

7442213491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The square root of 7442213491 is about 86268.2646805881. The cubic root of 7442213491 is about 1952.3935972680.

The spelling of 7442213491 in words is "seven billion, four hundred forty-two million, two hundred thirteen thousand, four hundred ninety-one".