1119023191 has 12 divisors (see below), whose sum is σ = 1321882200. Its totient is φ = 939038880.

The previous prime is 1119023189. The next prime is 1119023207. The reversal of 1119023191 is 1913209111.

It is not a de Polignac number, because 1119023191 - 2¹ = 1119023189 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 (1119023111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 299116 + ... + 302833.

It is an arithmetic number, because the mean of its divisors is an integer number (110156850).

Almost surely, 2^1119023191 is an apocalyptic number.

1119023191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1119023191 is a deficient number, since it is larger than the sum of its proper divisors (202859009).

1119023191 is a wasteful number, since it uses less digits than its factorization.

1119023191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601986 (or 601973 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 28.

The square root of 1119023191 is about 33451.8040021760. The cubic root of 1119023191 is about 1038.1968233331.

The spelling of 1119023191 in words is "one billion, one hundred nineteen million, twenty-three thousand, one hundred ninety-one".