1938033009 has 12 divisors (see below), whose sum is σ = 3053870352. Its totient is φ = 1174565400.

The previous prime is 1938033001. The next prime is 1938033023. The reversal of 1938033009 is 9003308391.

It is not a de Polignac number, because 1938033009 - 2³ = 1938033001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1938033001) 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 11 ways as a sum of consecutive naturals, for example, 9787947 + ... + 9788144.

It is an arithmetic number, because the mean of its divisors is an integer number (254489196).

Almost surely, 2^1938033009 is an apocalyptic number.

It is an amenable number.

1938033009 is a deficient number, since it is larger than the sum of its proper divisors (1115837343).

1938033009 is a wasteful number, since it uses less digits than its factorization.

1938033009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19576108 (or 19576105 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 1938033009 is about 44023.0963131854. The cubic root of 1938033009 is about 1246.7720466825.

The spelling of 1938033009 in words is "one billion, nine hundred thirty-eight million, thirty-three thousand, nine".