1939683869392 has 20 divisors (see below), whose sum is σ = 3758370140260. Its totient is φ = 969781897728.

The previous prime is 1939683869327. The next prime is 1939683869407. The reversal of 1939683869392 is 2939683869391.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 811916332096 + 1127767537296 = 901064^2 + 1061964^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3485193 + ... + 4003240.

It is an arithmetic number, because the mean of its divisors is an integer number (187918507013).

Almost surely, 2^{1939683869392} is an apocalyptic number.

It is an amenable number.

1939683869392 is a deficient number, since it is larger than the sum of its proper divisors (1818686270868).

1939683869392 is a wasteful number, since it uses less digits than its factorization.

1939683869392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7504630 (or 7504624 counting only the distinct ones).

The product of its digits is 816293376, while the sum is 76.

Subtracting 1939683869392 from its reverse (2939683869391), we obtain a palindrome (999999999999).

The spelling of 1939683869392 in words is "one trillion, nine hundred thirty-nine billion, six hundred eighty-three million, eight hundred sixty-nine thousand, three hundred ninety-two".