1812085151 has 2 divisors, whose sum is σ = 1812085152. Its totient is φ = 1812085150.

The previous prime is 1812085147. The next prime is 1812085189. The reversal of 1812085151 is 1515802181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1812085151 - 2² = 1812085147 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1812085111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906042575 + 906042576.

It is an arithmetic number, because the mean of its divisors is an integer number (906042576).

Almost surely, 2^1812085151 is an apocalyptic number.

1812085151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1812085151 is an equidigital number, since it uses as much as digits as its factorization.

1812085151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 32.

The square root of 1812085151 is about 42568.5934815798. The cubic root of 1812085151 is about 1219.1567116467.

The spelling of 1812085151 in words is "one billion, eight hundred twelve million, eighty-five thousand, one hundred fifty-one".