1812164294 has 4 divisors (see below), whose sum is σ = 2718246444. Its totient is φ = 906082146.

The previous prime is 1812164293. The next prime is 1812164357. The reversal of 1812164294 is 4924612181.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812164293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453041072 + ... + 453041075.

It is an arithmetic number, because the mean of its divisors is an integer number (679561611).

Almost surely, 2^1812164294 is an apocalyptic number.

1812164294 is a deficient number, since it is larger than the sum of its proper divisors (906082150).

1812164294 is an equidigital number, since it uses as much as digits as its factorization.

1812164294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906082149.

The product of its digits is 27648, while the sum is 38.

The square root of 1812164294 is about 42569.5230652165. The cubic root of 1812164294 is about 1219.1744603187.

The spelling of 1812164294 in words is "one billion, eight hundred twelve million, one hundred sixty-four thousand, two hundred ninety-four".