1083078391 has 4 divisors (see below), whose sum is σ = 1093015000. Its totient is φ = 1073141784.

The previous prime is 1083078379. The next prime is 1083078401. The reversal of 1083078391 is 1938703801.

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 1083078391 - 2²³ = 1074689783 is a prime.

It is a super-2 number, since 2×1083078391² = 2346117602102297762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1083078301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4968141 + ... + 4968358.

It is an arithmetic number, because the mean of its divisors is an integer number (273253750).

Almost surely, 2^1083078391 is an apocalyptic number.

1083078391 is a deficient number, since it is larger than the sum of its proper divisors (9936609).

1083078391 is an equidigital number, since it uses as much as digits as its factorization.

1083078391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9936608.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 1083078391 is about 32910.1563502819. The cubic root of 1083078391 is about 1026.9594533872.

The spelling of 1083078391 in words is "one billion, eighty-three million, seventy-eight thousand, three hundred ninety-one".