1812352073 has 6 divisors (see below), whose sum is σ = 2108246346. Its totient is φ = 1553444592.

The previous prime is 1812352051. The next prime is 1812352097. The reversal of 1812352073 is 3702532181.

It can be written as a sum of positive squares in only one way, i.e., 1368112144 + 444239929 = 36988^2 + 21077^2 .

It is not a de Polignac number, because 1812352073 - 2¹⁶ = 1812286537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1812352033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18493340 + ... + 18493437.

It is an arithmetic number, because the mean of its divisors is an integer number (351374391).

Almost surely, 2^1812352073 is an apocalyptic number.

It is an amenable number.

1812352073 is a deficient number, since it is larger than the sum of its proper divisors (295894273).

1812352073 is an equidigital number, since it uses as much as digits as its factorization.

1812352073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36986791 (or 36986784 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1812352073 is about 42571.7285648586. The cubic root of 1812352073 is about 1219.2165697188.

The spelling of 1812352073 in words is "one billion, eight hundred twelve million, three hundred fifty-two thousand, seventy-three".