1906445063 has 8 divisors (see below), whose sum is σ = 1916425728. Its totient is φ = 1896477624.

The previous prime is 1906445053. The next prime is 1906445071. The reversal of 1906445063 is 3605446091.

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

It is a cyclic number.

It is not a de Polignac number, because 1906445063 - 2⁸ = 1906444807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906445003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423020 + ... + 427502.

It is an arithmetic number, because the mean of its divisors is an integer number (239553216).

Almost surely, 2^1906445063 is an apocalyptic number.

1906445063 is a deficient number, since it is larger than the sum of its proper divisors (9980665).

1906445063 is a wasteful number, since it uses less digits than its factorization.

1906445063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6613.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 1906445063 is about 43662.8567892665. The cubic root of 1906445063 is about 1239.9612073799.

The spelling of 1906445063 in words is "one billion, nine hundred six million, four hundred forty-five thousand, sixty-three".