1026052865 has 4 divisors (see below), whose sum is σ = 1231263444. Its totient is φ = 820842288.

The previous prime is 1026052847. The next prime is 1026052873. The reversal of 1026052865 is 5682506201.

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 434639104 + 591413761 = 20848^2 + 24319^2 .

It is a cyclic number.

It is not a de Polignac number, because 1026052865 - 2¹² = 1026048769 is a prime.

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, 102605282 + ... + 102605291.

It is an arithmetic number, because the mean of its divisors is an integer number (307815861).

Almost surely, 2^1026052865 is an apocalyptic number.

It is an amenable number.

1026052865 is a deficient number, since it is larger than the sum of its proper divisors (205210579).

1026052865 is an equidigital number, since it uses as much as digits as its factorization.

1026052865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205210578.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 1026052865 is about 32032.0599556132. The cubic root of 1026052865 is about 1008.6099444351.

It can be divided in two parts, 102 and 6052865, that multiplied together give a triangular number (617392230 = T₃₅₁₃₉).

The spelling of 1026052865 in words is "one billion, twenty-six million, fifty-two thousand, eight hundred sixty-five".