3938748743 has 4 divisors (see below), whose sum is σ = 3939054768. Its totient is φ = 3938442720.

The previous prime is 3938748731. The next prime is 3938748761. The reversal of 3938748743 is 3478478393.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3938748743 - 2¹² = 3938744647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3938748713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132818 + ... + 159743.

It is an arithmetic number, because the mean of its divisors is an integer number (984763692).

Almost surely, 2^3938748743 is an apocalyptic number.

3938748743 is a deficient number, since it is larger than the sum of its proper divisors (306025).

3938748743 is a wasteful number, since it uses less digits than its factorization.

3938748743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306024.

The product of its digits is 12192768, while the sum is 56.

The square root of 3938748743 is about 62759.4514236700. The cubic root of 3938748743 is about 1579.2568131953.

The spelling of 3938748743 in words is "three billion, nine hundred thirty-eight million, seven hundred forty-eight thousand, seven hundred forty-three".