1092945409 has 4 divisors (see below), whose sum is σ = 1093052160. Its totient is φ = 1092838660.

The previous prime is 1092945407. The next prime is 1092945431. The reversal of 1092945409 is 9045492901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1092945409 - 2¹ = 1092945407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1092945407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36169 + ... + 59110.

It is an arithmetic number, because the mean of its divisors is an integer number (273263040).

Almost surely, 2^1092945409 is an apocalyptic number.

It is an amenable number.

1092945409 is a deficient number, since it is larger than the sum of its proper divisors (106751).

1092945409 is an equidigital number, since it uses as much as digits as its factorization.

1092945409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106750.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 1092945409 is about 33059.7248778631. The cubic root of 1092945409 is about 1030.0686192384.

The spelling of 1092945409 in words is "one billion, ninety-two million, nine hundred forty-five thousand, four hundred nine".