1812713005 has 16 divisors (see below), whose sum is σ = 2281103280. Its totient is φ = 1380976128.

The previous prime is 1812712987. The next prime is 1812713017. The reversal of 1812713005 is 5003172181.

It can be written as a sum of positive squares in 8 ways, for example, as 94361796 + 1718351209 = 9714^2 + 41453^2 .

It is a cyclic number.

It is not a de Polignac number, because 1812713005 - 2⁵ = 1812712973 is a prime.

It is a super-2 number, since 2×1812713005² = 6571856876992260050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75042 + ... + 96211.

It is an arithmetic number, because the mean of its divisors is an integer number (142568955).

Almost surely, 2^1812713005 is an apocalyptic number.

It is an amenable number.

1812713005 is a deficient number, since it is larger than the sum of its proper divisors (468390275).

1812713005 is a wasteful number, since it uses less digits than its factorization.

1812713005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171360.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1812713005 is about 42575.9674581800. The cubic root of 1812713005 is about 1219.2975004739.

Adding to 1812713005 its reverse (5003172181), we get a palindrome (6815885186).

The spelling of 1812713005 in words is "one billion, eight hundred twelve million, seven hundred thirteen thousand, five".