1938442734 has 12 divisors (see below), whose sum is σ = 4199959296. Its totient is φ = 646147572.

The previous prime is 1938442687. The next prime is 1938442739. The reversal of 1938442734 is 4372448391.

1938442734 is a `hidden beast` number, since 193 + 8 + 4 + 427 + 34 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1938442734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938442739) 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 5 ways as a sum of consecutive naturals, for example, 53845614 + ... + 53845649.

It is an arithmetic number, because the mean of its divisors is an integer number (349996608).

Almost surely, 2^1938442734 is an apocalyptic number.

1938442734 is an abundant number, since it is smaller than the sum of its proper divisors (2261516562).

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

1938442734 is a wasteful number, since it uses less digits than its factorization.

1938442734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107691271 (or 107691268 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 1938442734 is about 44027.7495904572. The cubic root of 1938442734 is about 1246.8599016846.

The spelling of 1938442734 in words is "one billion, nine hundred thirty-eight million, four hundred forty-two thousand, seven hundred thirty-four".