1528823797 has 2 divisors, whose sum is σ = 1528823798. Its totient is φ = 1528823796.

The previous prime is 1528823789. The next prime is 1528823833. The reversal of 1528823797 is 7973288251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1502260081 + 26563716 = 38759^2 + 5154^2 .

It is an emirp because it is prime and its reverse (7973288251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1528823797 - 2³ = 1528823789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1528823707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 764411898 + 764411899.

It is an arithmetic number, because the mean of its divisors is an integer number (764411899).

Almost surely, 2^1528823797 is an apocalyptic number.

It is an amenable number.

1528823797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1528823797 is an equidigital number, since it uses as much as digits as its factorization.

1528823797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 52.

The square root of 1528823797 is about 39100.1764318270. The cubic root of 1528823797 is about 1151.9999972371. Note that the first 5 decimals are identical.

The spelling of 1528823797 in words is "one billion, five hundred twenty-eight million, eight hundred twenty-three thousand, seven hundred ninety-seven".