1812055051 has 2 divisors, whose sum is σ = 1812055052. Its totient is φ = 1812055050.

The previous prime is 1812055031. The next prime is 1812055073. The reversal of 1812055051 is 1505502181.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1812055051 is a prime.

It is a super-2 number, since 2×1812055051² = 6567087015709225202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1812055031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906027525 + 906027526.

It is an arithmetic number, because the mean of its divisors is an integer number (906027526).

Almost surely, 2^1812055051 is an apocalyptic number.

1812055051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1812055051 is an equidigital number, since it uses as much as digits as its factorization.

1812055051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000, while the sum is 28.

The square root of 1812055051 is about 42568.2399330769. The cubic root of 1812055051 is about 1219.1499612611.

The spelling of 1812055051 in words is "one billion, eight hundred twelve million, fifty-five thousand, fifty-one".