1027452865 has 4 divisors (see below), whose sum is σ = 1232943444. Its totient is φ = 821962288.

The previous prime is 1027452827. The next prime is 1027452931. The reversal of 1027452865 is 5682547201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 523540161 + 503912704 = 22881^2 + 22448^2 .

It is a cyclic number.

It is not a de Polignac number, because 1027452865 - 2⁹ = 1027452353 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 102745282 + ... + 102745291.

It is an arithmetic number, because the mean of its divisors is an integer number (308235861).

Almost surely, 2^1027452865 is an apocalyptic number.

It is an amenable number.

1027452865 is a deficient number, since it is larger than the sum of its proper divisors (205490579).

1027452865 is an equidigital number, since it uses as much as digits as its factorization.

1027452865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205490578.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 1027452865 is about 32053.9056122651. The cubic root of 1027452865 is about 1009.0684692767.

The spelling of 1027452865 in words is "one billion, twenty-seven million, four hundred fifty-two thousand, eight hundred sixty-five".