1806193061 has 2 divisors, whose sum is σ = 1806193062. Its totient is φ = 1806193060.

The previous prime is 1806193031. The next prime is 1806193133. The reversal of 1806193061 is 1603916081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1798268836 + 7924225 = 42406^2 + 2815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1806193061 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1806193031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 903096530 + 903096531.

It is an arithmetic number, because the mean of its divisors is an integer number (903096531).

Almost surely, 2^1806193061 is an apocalyptic number.

It is an amenable number.

1806193061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1806193061 is an equidigital number, since it uses as much as digits as its factorization.

1806193061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 1806193061 is about 42499.3301241325. The cubic root of 1806193061 is about 1217.8338928535.

The spelling of 1806193061 in words is "one billion, eight hundred six million, one hundred ninety-three thousand, sixty-one".