1920438933 has 32 divisors (see below), whose sum is σ = 3024863232. Its totient is φ = 1060560000.

The previous prime is 1920438913. The next prime is 1920438943. The reversal of 1920438933 is 3398340291.

It is not a de Polignac number, because 1920438933 - 2⁶ = 1920438869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920438913) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 638433 + ... + 641433.

It is an arithmetic number, because the mean of its divisors is an integer number (94526976).

Almost surely, 2^1920438933 is an apocalyptic number.

It is an amenable number.

1920438933 is a deficient number, since it is larger than the sum of its proper divisors (1104424299).

1920438933 is a wasteful number, since it uses less digits than its factorization.

1920438933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4025.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 1920438933 is about 43822.8129288844. The cubic root of 1920438933 is about 1242.9877081431.

The spelling of 1920438933 in words is "one billion, nine hundred twenty million, four hundred thirty-eight thousand, nine hundred thirty-three".