1083709909 has 8 divisors (see below), whose sum is σ = 1140147288. Its totient is φ = 1028701440.

The previous prime is 1083709877. The next prime is 1083709919. The reversal of 1083709909 is 9099073801.

It can be written as a sum of positive squares in 4 ways, for example, as 1102500 + 1082607409 = 1050^2 + 32903^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1083709909 - 2⁵ = 1083709877 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 (1083709919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355672 + ... + 358705.

It is an arithmetic number, because the mean of its divisors is an integer number (142518411).

Almost surely, 2^1083709909 is an apocalyptic number.

It is an amenable number.

1083709909 is a deficient number, since it is larger than the sum of its proper divisors (56437379).

1083709909 is an equidigital number, since it uses as much as digits as its factorization.

1083709909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714455.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 1083709909 is about 32919.7495282087. The cubic root of 1083709909 is about 1027.1590133870.

The spelling of 1083709909 in words is "one billion, eighty-three million, seven hundred nine thousand, nine hundred nine".