1812019739223 has 8 divisors (see below), whose sum is σ = 2422112029168. Its totient is φ = 1204970304384.

The previous prime is 1812019739219. The next prime is 1812019739251. The reversal of 1812019739223 is 3229379102181.

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

It is not a de Polignac number, because 1812019739223 - 2² = 1812019739219 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 (1812019739423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 760712386 + ... + 760714767.

It is an arithmetic number, because the mean of its divisors is an integer number (302764003646).

Almost surely, 2^{1812019739223} is an apocalyptic number.

1812019739223 is a deficient number, since it is larger than the sum of its proper divisors (610092289945).

1812019739223 is a wasteful number, since it uses less digits than its factorization.

1812019739223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521427553.

The product of its (nonzero) digits is 326592, while the sum is 48.

The spelling of 1812019739223 in words is "one trillion, eight hundred twelve billion, nineteen million, seven hundred thirty-nine thousand, two hundred twenty-three".