1090678893391 has 4 divisors (see below), whose sum is σ = 1101923005792. Its totient is φ = 1079434780992.

The previous prime is 1090678893257. The next prime is 1090678893467. The reversal of 1090678893391 is 1933988760901.

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 1090678893391 - 2²⁹ = 1090142022479 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 (1090678893191) 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, 5622056055 + ... + 5622056248.

It is an arithmetic number, because the mean of its divisors is an integer number (275480751448).

Almost surely, 2^{1090678893391} is an apocalyptic number.

1090678893391 is a deficient number, since it is larger than the sum of its proper divisors (11244112401).

1090678893391 is an equidigital number, since it uses as much as digits as its factorization.

1090678893391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11244112400.

The product of its (nonzero) digits is 17635968, while the sum is 64.

The spelling of 1090678893391 in words is "one trillion, ninety billion, six hundred seventy-eight million, eight hundred ninety-three thousand, three hundred ninety-one".