1090265863 has 4 divisors (see below), whose sum is σ = 1090403640. Its totient is φ = 1090128088.

The previous prime is 1090265861. The next prime is 1090265873. The reversal of 1090265863 is 3685620901.

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

It is a cyclic number.

It is not a de Polignac number, because 1090265863 - 2¹ = 1090265861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090265861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56245 + ... + 73102.

It is an arithmetic number, because the mean of its divisors is an integer number (272600910).

Almost surely, 2^1090265863 is an apocalyptic number.

1090265863 is a deficient number, since it is larger than the sum of its proper divisors (137777).

1090265863 is an equidigital number, since it uses as much as digits as its factorization.

1090265863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137776.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 1090265863 is about 33019.1741719868. The cubic root of 1090265863 is about 1029.2261328287.

The spelling of 1090265863 in words is "one billion, ninety million, two hundred sixty-five thousand, eight hundred sixty-three".