1812305486623 has 4 divisors (see below), whose sum is σ = 1812317703328. Its totient is φ = 1812293269920.

The previous prime is 1812305486617. The next prime is 1812305486633. The reversal of 1812305486623 is 3266845032181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1812305486623 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 (1812305486633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5883063 + ... + 6183448.

It is an arithmetic number, because the mean of its divisors is an integer number (453079425832).

Almost surely, 2^{1812305486623} is an apocalyptic number.

1812305486623 is a deficient number, since it is larger than the sum of its proper divisors (12216705).

1812305486623 is a wasteful number, since it uses less digits than its factorization.

1812305486623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12216704.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 1812305486623 in words is "one trillion, eight hundred twelve billion, three hundred five million, four hundred eighty-six thousand, six hundred twenty-three".