1819231023 has 16 divisors (see below), whose sum is σ = 2557207296. Its totient is φ = 1148125440.

The previous prime is 1819231003. The next prime is 1819231031. The reversal of 1819231023 is 3201329181.

It is not a de Polignac number, because 1819231023 - 2⁸ = 1819230767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1819231003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129213 + ... + 142598.

It is an arithmetic number, because the mean of its divisors is an integer number (159825456).

Almost surely, 2^1819231023 is an apocalyptic number.

1819231023 is a deficient number, since it is larger than the sum of its proper divisors (737976273).

1819231023 is a wasteful number, since it uses less digits than its factorization.

1819231023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271934.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1819231023 is about 42652.4445137673. Note that the first 3 decimals coincide. The cubic root of 1819231023 is about 1220.7571719640.

The spelling of 1819231023 in words is "one billion, eight hundred nineteen million, two hundred thirty-one thousand, twenty-three".