1090906265 has 4 divisors (see below), whose sum is σ = 1309087524. Its totient is φ = 872725008.

The previous prime is 1090906231. The next prime is 1090906277. The reversal of 1090906265 is 5626090901.

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 852172864 + 238733401 = 29192^2 + 15451^2 .

It is a cyclic number.

It is not a de Polignac number, because 1090906265 - 2⁸ = 1090906009 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, 109090622 + ... + 109090631.

It is an arithmetic number, because the mean of its divisors is an integer number (327271881).

Almost surely, 2^1090906265 is an apocalyptic number.

It is an amenable number.

1090906265 is a deficient number, since it is larger than the sum of its proper divisors (218181259).

1090906265 is an equidigital number, since it uses as much as digits as its factorization.

1090906265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218181258.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 1090906265 is about 33028.8701744398. The cubic root of 1090906265 is about 1029.4276095165.

The spelling of 1090906265 in words is "one billion, ninety million, nine hundred six thousand, two hundred sixty-five".