1938052115999 has 16 divisors (see below), whose sum is σ = 2055088112256. Its totient is φ = 1821354662400.

The previous prime is 1938052115933. The next prime is 1938052116001. The reversal of 1938052115999 is 9995112508391.

It is a cyclic number.

It is not a de Polignac number, because 1938052115999 - 2³⁶ = 1869332639263 is a prime.

It is a super-3 number, since 3×1938052115999³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938052115599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43294769 + ... + 43339509.

It is an arithmetic number, because the mean of its divisors is an integer number (128443007016).

Almost surely, 2^{1938052115999} is an apocalyptic number.

1938052115999 is a deficient number, since it is larger than the sum of its proper divisors (117035996257).

1938052115999 is a wasteful number, since it uses less digits than its factorization.

1938052115999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48466.

The product of its (nonzero) digits is 7873200, while the sum is 62.

The spelling of 1938052115999 in words is "one trillion, nine hundred thirty-eight billion, fifty-two million, one hundred fifteen thousand, nine hundred ninety-nine".