1048287865 has 4 divisors (see below), whose sum is σ = 1257945444. Its totient is φ = 838630288.

The previous prime is 1048287809. The next prime is 1048287871. The reversal of 1048287865 is 5687828401.

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 153859216 + 894428649 = 12404^2 + 29907^2 .

It is a cyclic number.

It is not a de Polignac number, because 1048287865 - 2¹⁵ = 1048255097 is a prime.

It is a Smith number, since the sum of its digits (49) 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104828782 + ... + 104828791.

It is an arithmetic number, because the mean of its divisors is an integer number (314486361).

Almost surely, 2^1048287865 is an apocalyptic number.

It is an amenable number.

1048287865 is a deficient number, since it is larger than the sum of its proper divisors (209657579).

1048287865 is an equidigital number, since it uses as much as digits as its factorization.

1048287865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209657578.

The product of its (nonzero) digits is 860160, while the sum is 49.

The square root of 1048287865 is about 32377.2738969790. The cubic root of 1048287865 is about 1015.8436093552.

The spelling of 1048287865 in words is "one billion, forty-eight million, two hundred eighty-seven thousand, eight hundred sixty-five".