1946442899 has 4 divisors (see below), whose sum is σ = 1946645880. Its totient is φ = 1946239920.

The previous prime is 1946442887. The next prime is 1946442923. The reversal of 1946442899 is 9982446491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1946442899 - 2²⁰ = 1945394323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1946442299) 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 3 ways as a sum of consecutive naturals, for example, 86354 + ... + 106535.

It is an arithmetic number, because the mean of its divisors is an integer number (486661470).

Almost surely, 2^1946442899 is an apocalyptic number.

1946442899 is a deficient number, since it is larger than the sum of its proper divisors (202981).

1946442899 is a wasteful number, since it uses less digits than its factorization.

1946442899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202980.

The product of its digits is 4478976, while the sum is 56.

The square root of 1946442899 is about 44118.5097096445. The cubic root of 1946442899 is about 1248.5728563489.

The spelling of 1946442899 in words is "one billion, nine hundred forty-six million, four hundred forty-two thousand, eight hundred ninety-nine".