1083509405 has 8 divisors (see below), whose sum is σ = 1418412384. Its totient is φ = 788006800.

The previous prime is 1083509387. The next prime is 1083509431. The reversal of 1083509405 is 5049053801.

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

It is not a de Polignac number, because 1083509405 - 2¹⁰ = 1083508381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9850031 + ... + 9850140.

It is an arithmetic number, because the mean of its divisors is an integer number (177301548).

Almost surely, 2^1083509405 is an apocalyptic number.

It is an amenable number.

1083509405 is a deficient number, since it is larger than the sum of its proper divisors (334902979).

1083509405 is a wasteful number, since it uses less digits than its factorization.

1083509405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19700187.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 1083509405 is about 32916.7040421729. The cubic root of 1083509405 is about 1027.0956624258.

The spelling of 1083509405 in words is "one billion, eighty-three million, five hundred nine thousand, four hundred five".