1806228750778 has 8 divisors (see below), whose sum is σ = 2736168305940. Its totient is φ = 894172648800.

The previous prime is 1806228750769. The next prime is 1806228750797. The reversal of 1806228750778 is 8770578226081.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1419117065289 + 387111685489 = 1191267^2 + 622183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4470863043 + ... + 4470863446.

Almost surely, 2^{1806228750778} is an apocalyptic number.

1806228750778 is a deficient number, since it is larger than the sum of its proper divisors (929939555162).

1806228750778 is a wasteful number, since it uses less digits than its factorization.

1806228750778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8941726592.

The product of its (nonzero) digits is 21073920, while the sum is 61.

The spelling of 1806228750778 in words is "one trillion, eight hundred six billion, two hundred twenty-eight million, seven hundred fifty thousand, seven hundred seventy-eight".