1806494847 has 16 divisors (see below), whose sum is σ = 2434185600. Its totient is φ = 1191621600.

The previous prime is 1806494831. The next prime is 1806494849. The reversal of 1806494847 is 7484946081.

It is not a de Polignac number, because 1806494847 - 2⁴ = 1806494831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1806494847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806494849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130572 + ... + 143742.

It is an arithmetic number, because the mean of its divisors is an integer number (152136600).

Almost surely, 2^1806494847 is an apocalyptic number.

1806494847 is a deficient number, since it is larger than the sum of its proper divisors (627690753).

1806494847 is a wasteful number, since it uses less digits than its factorization.

1806494847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13654.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The square root of 1806494847 is about 42502.8804553291. The cubic root of 1806494847 is about 1217.9017159377.

The spelling of 1806494847 in words is "one billion, eight hundred six million, four hundred ninety-four thousand, eight hundred forty-seven".