1813119194 has 8 divisors (see below), whose sum is σ = 2862819840. Its totient is φ = 858845916.

The previous prime is 1813119193. The next prime is 1813119199. The reversal of 1813119194 is 4919113181.

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

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 47713663 = 1813119194 / (1 + 8 + 1 + 3 + 1 + 1 + 9 + 1 + 9 + 4).

It is not an unprimeable number, because it can be changed into a prime (1813119193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23856794 + ... + 23856869.

It is an arithmetic number, because the mean of its divisors is an integer number (357852480).

Almost surely, 2^1813119194 is an apocalyptic number.

1813119194 is a deficient number, since it is larger than the sum of its proper divisors (1049700646).

1813119194 is a wasteful number, since it uses less digits than its factorization.

1813119194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47713684.

The product of its digits is 7776, while the sum is 38.

The square root of 1813119194 is about 42580.7373585756. The cubic root of 1813119194 is about 1219.3885662306.

The spelling of 1813119194 in words is "one billion, eight hundred thirteen million, one hundred nineteen thousand, one hundred ninety-four".