1812742273 has 8 divisors (see below), whose sum is σ = 1817703360. Its totient is φ = 1807789200.

The previous prime is 1812742241. The next prime is 1812742277. The reversal of 1812742273 is 3722472181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1812742273 - 2⁵ = 1812742241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1812742277) 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, 952623 + ... + 954523.

It is an arithmetic number, because the mean of its divisors is an integer number (227212920).

Almost surely, 2^1812742273 is an apocalyptic number.

It is an amenable number.

1812742273 is a deficient number, since it is larger than the sum of its proper divisors (4961087).

1812742273 is a wasteful number, since it uses less digits than its factorization.

1812742273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007.

The product of its digits is 37632, while the sum is 37.

The square root of 1812742273 is about 42576.3111718242. The cubic root of 1812742273 is about 1219.3040626834.

The spelling of 1812742273 in words is "one billion, eight hundred twelve million, seven hundred forty-two thousand, two hundred seventy-three".