1812351166 has 16 divisors (see below), whose sum is σ = 2770511040. Its totient is φ = 888994080.

The previous prime is 1812351137. The next prime is 1812351169. The reversal of 1812351166 is 6611532181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812351169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11725 + ... + 61336.

It is an arithmetic number, because the mean of its divisors is an integer number (173156940).

Almost surely, 2^1812351166 is an apocalyptic number.

1812351166 is a deficient number, since it is larger than the sum of its proper divisors (958159874).

1812351166 is a wasteful number, since it uses less digits than its factorization.

1812351166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73299.

The product of its digits is 8640, while the sum is 34.

The square root of 1812351166 is about 42571.7179122478. The cubic root of 1812351166 is about 1219.2163663312.

The spelling of 1812351166 in words is "one billion, eight hundred twelve million, three hundred fifty-one thousand, one hundred sixty-six".