1812164495 has 4 divisors (see below), whose sum is σ = 2174597400. Its totient is φ = 1449731592.

The previous prime is 1812164467. The next prime is 1812164507. The reversal of 1812164495 is 5944612181.

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

It is a cyclic number.

It is not a de Polignac number, because 1812164495 - 2⁸ = 1812164239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181216445 + ... + 181216454.

It is an arithmetic number, because the mean of its divisors is an integer number (543649350).

Almost surely, 2^1812164495 is an apocalyptic number.

1812164495 is a deficient number, since it is larger than the sum of its proper divisors (362432905).

1812164495 is an equidigital number, since it uses as much as digits as its factorization.

1812164495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362432904.

The product of its digits is 69120, while the sum is 41.

The square root of 1812164495 is about 42569.5254260604. The cubic root of 1812164495 is about 1219.1745053944.

The spelling of 1812164495 in words is "one billion, eight hundred twelve million, one hundred sixty-four thousand, four hundred ninety-five".