1812273470 has 32 divisors (see below), whose sum is σ = 3807433728. Its totient is φ = 608129568.

The previous prime is 1812273439. The next prime is 1812273473. The reversal of 1812273470 is 743722181.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1812273470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812273473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272132 + ... + 278711.

It is an arithmetic number, because the mean of its divisors is an integer number (118982304).

Almost surely, 2^1812273470 is an apocalyptic number.

1812273470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1812273470 is an abundant number, since it is smaller than the sum of its proper divisors (1995160258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1812273470 is a wasteful number, since it uses less digits than its factorization.

1812273470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550904.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 1812273470 is about 42570.8053717568. The cubic root of 1812273470 is about 1219.1989433670.

The spelling of 1812273470 in words is "one billion, eight hundred twelve million, two hundred seventy-three thousand, four hundred seventy".