1812655045 has 8 divisors (see below), whose sum is σ = 2181019896. Its totient is φ = 1446234816.

The previous prime is 1812655021. The next prime is 1812655069. The reversal of 1812655045 is 5405562181.

It is an interprime number because it is at equal distance from previous prime (1812655021) and next prime (1812655069).

It can be written as a sum of positive squares in 4 ways, for example, as 225270081 + 1587384964 = 15009^2 + 39842^2 .

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 1812655045 - 2⁹ = 1812654533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1812654995 and 1812655013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484102 + ... + 487831.

It is an arithmetic number, because the mean of its divisors is an integer number (272627487).

Almost surely, 2^1812655045 is an apocalyptic number.

It is an amenable number.

1812655045 is a deficient number, since it is larger than the sum of its proper divisors (368364851).

1812655045 is an equidigital number, since it uses as much as digits as its factorization.

1812655045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972311.

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 1812655045 is about 42575.2867870552. The cubic root of 1812655045 is about 1219.2845049922.

The spelling of 1812655045 in words is "one billion, eight hundred twelve million, six hundred fifty-five thousand, forty-five".