7484590891 has 2 divisors, whose sum is σ = 7484590892. Its totient is φ = 7484590890.

The previous prime is 7484590807. The next prime is 7484590909. The reversal of 7484590891 is 1980954847.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7484590891 - 2¹¹ = 7484588843 is a prime.

It is not a weakly prime, because it can be changed into another prime (7484590801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3742295445 + 3742295446.

It is an arithmetic number, because the mean of its divisors is an integer number (3742295446).

Almost surely, 2^7484590891 is an apocalyptic number.

7484590891 is a deficient number, since it is larger than the sum of its proper divisors (1).

7484590891 is an equidigital number, since it uses as much as digits as its factorization.

7484590891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The square root of 7484590891 is about 86513.5301036780. The cubic root of 7484590891 is about 1956.0923543022.

The spelling of 7484590891 in words is "seven billion, four hundred eighty-four million, five hundred ninety thousand, eight hundred ninety-one".