7828738591 has 2 divisors, whose sum is σ = 7828738592. Its totient is φ = 7828738590.

The previous prime is 7828738537. The next prime is 7828738609. The reversal of 7828738591 is 1958378287.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7828738591 - 2²⁷ = 7694520863 is a prime.

It is a super-2 number, since 2×7828738591² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7828738691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3914369295 + 3914369296.

It is an arithmetic number, because the mean of its divisors is an integer number (3914369296).

Almost surely, 2^7828738591 is an apocalyptic number.

7828738591 is a deficient number, since it is larger than the sum of its proper divisors (1).

7828738591 is an equidigital number, since it uses as much as digits as its factorization.

7828738591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 58.

The square root of 7828738591 is about 88480.1593070447. The cubic root of 7828738591 is about 1985.6251452225.

The spelling of 7828738591 in words is "seven billion, eight hundred twenty-eight million, seven hundred thirty-eight thousand, five hundred ninety-one".