1083128379 has 4 divisors (see below), whose sum is σ = 1444171176. Its totient is φ = 722085584.

The previous prime is 1083128377. The next prime is 1083128381. The reversal of 1083128379 is 9738213801.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1083128377) and next prime (1083128381).

It is a cyclic number.

It is not a de Polignac number, because 1083128379 - 2¹ = 1083128377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1083128379.

It is not an unprimeable number, because it can be changed into a prime (1083128377) 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, 180521394 + ... + 180521399.

It is an arithmetic number, because the mean of its divisors is an integer number (361042794).

Almost surely, 2^1083128379 is an apocalyptic number.

1083128379 is a deficient number, since it is larger than the sum of its proper divisors (361042797).

1083128379 is an equidigital number, since it uses as much as digits as its factorization.

1083128379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361042796.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 1083128379 is about 32910.9158031192. The cubic root of 1083128379 is about 1026.9752524465.

The spelling of 1083128379 in words is "one billion, eighty-three million, one hundred twenty-eight thousand, three hundred seventy-nine".