7485191191 has 2 divisors, whose sum is σ = 7485191192. Its totient is φ = 7485191190.

The previous prime is 7485191183. The next prime is 7485191221. The reversal of 7485191191 is 1911915847.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7485191191 - 2³ = 7485191183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7485191491) 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, 3742595595 + 3742595596.

It is an arithmetic number, because the mean of its divisors is an integer number (3742595596).

Almost surely, 2^7485191191 is an apocalyptic number.

7485191191 is a deficient number, since it is larger than the sum of its proper divisors (1).

7485191191 is an equidigital number, since it uses as much as digits as its factorization.

7485191191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 46.

The square root of 7485191191 is about 86516.9994336373. Note that the first 3 decimals coincide. The cubic root of 7485191191 is about 1956.1446488928.

The spelling of 7485191191 in words is "seven billion, four hundred eighty-five million, one hundred ninety-one thousand, one hundred ninety-one".