1806606542 has 8 divisors (see below), whose sum is σ = 2918364456. Its totient is φ = 833818392.

The previous prime is 1806606509. The next prime is 1806606551. The reversal of 1806606542 is 2456066081.

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

It is a junction number, because it is equal to n+sod(n) for n = 1806606496 and 1806606505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34742408 + ... + 34742459.

It is an arithmetic number, because the mean of its divisors is an integer number (364795557).

Almost surely, 2^1806606542 is an apocalyptic number.

1806606542 is a deficient number, since it is larger than the sum of its proper divisors (1111757914).

1806606542 is a wasteful number, since it uses less digits than its factorization.

1806606542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69484882.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 1806606542 is about 42504.1944047879. The cubic root of 1806606542 is about 1217.9268162452.

The spelling of 1806606542 in words is "one billion, eight hundred six million, six hundred six thousand, five hundred forty-two".