1812345023 has 2 divisors, whose sum is σ = 1812345024. Its totient is φ = 1812345022.

The previous prime is 1812345019. The next prime is 1812345079. The reversal of 1812345023 is 3205432181.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1812345023 - 2² = 1812345019 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1812342023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906172511 + 906172512.

It is an arithmetic number, because the mean of its divisors is an integer number (906172512).

Almost surely, 2^1812345023 is an apocalyptic number.

1812345023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1812345023 is an equidigital number, since it uses as much as digits as its factorization.

1812345023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1812345023 is about 42571.6457633482. The cubic root of 1812345023 is about 1219.2149888103.

The spelling of 1812345023 in words is "one billion, eight hundred twelve million, three hundred forty-five thousand, twenty-three".