1812740862 has 16 divisors (see below), whose sum is σ = 3629972880. Its totient is φ = 603498432.

The previous prime is 1812740819. The next prime is 1812740869. The reversal of 1812740862 is 2680472181.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1812740862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812740869) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 181873 + ... + 191580.

It is an arithmetic number, because the mean of its divisors is an integer number (226873305).

Almost surely, 2^1812740862 is an apocalyptic number.

1812740862 is an abundant number, since it is smaller than the sum of its proper divisors (1817232018).

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

1812740862 is a wasteful number, since it uses less digits than its factorization.

1812740862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374267.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 1812740862 is about 42576.2946015738. The cubic root of 1812740862 is about 1219.3037463232.

The spelling of 1812740862 in words is "one billion, eight hundred twelve million, seven hundred forty thousand, eight hundred sixty-two".