1938634792974 has 48 divisors (see below), whose sum is σ = 4646766144384. Its totient is φ = 579190928400.

The previous prime is 1938634792949. The next prime is 1938634792981. The reversal of 1938634792974 is 4792974368391.

It is a happy number.

1938634792974 is a `hidden beast` number, since 1 + 9 + 3 + 8 + 63 + 479 + 2 + 97 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68937244 + ... + 68965359.

It is an arithmetic number, because the mean of its divisors is an integer number (96807628008).

Almost surely, 2^{1938634792974} is an apocalyptic number.

1938634792974 is an abundant number, since it is smaller than the sum of its proper divisors (2708131351410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1938634792974 is a wasteful number, since it uses less digits than its factorization.

1938634792974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137902693 (or 137902690 counting only the distinct ones).

The product of its digits is 493807104, while the sum is 72.

The spelling of 1938634792974 in words is "one trillion, nine hundred thirty-eight billion, six hundred thirty-four million, seven hundred ninety-two thousand, nine hundred seventy-four".