1840225811 has 2 divisors, whose sum is σ = 1840225812. Its totient is φ = 1840225810.

The previous prime is 1840225801. The next prime is 1840225823. The reversal of 1840225811 is 1185220481.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1840225811 is a prime.

It is not a weakly prime, because it can be changed into another prime (1840225801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920112905 + 920112906.

It is an arithmetic number, because the mean of its divisors is an integer number (920112906).

Almost surely, 2^1840225811 is an apocalyptic number.

1840225811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840225811 is an equidigital number, since it uses as much as digits as its factorization.

1840225811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 1840225811 is about 42897.8532213443. The cubic root of 1840225811 is about 1225.4352607928.

The spelling of 1840225811 in words is "one billion, eight hundred forty million, two hundred twenty-five thousand, eight hundred eleven".