3889138791 has 8 divisors (see below), whose sum is σ = 5189540224. Its totient is φ = 2590748280.

The previous prime is 3889138711. The next prime is 3889138801. The reversal of 3889138791 is 1978319883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3889138791 - 2⁷ = 3889138663 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3889138711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498211 + ... + 505956.

It is an arithmetic number, because the mean of its divisors is an integer number (648692528).

Almost surely, 2^3889138791 is an apocalyptic number.

3889138791 is a deficient number, since it is larger than the sum of its proper divisors (1300401433).

3889138791 is a wasteful number, since it uses less digits than its factorization.

3889138791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005461.

The product of its digits is 2612736, while the sum is 57.

The square root of 3889138791 is about 62362.9600885013. The cubic root of 3889138791 is about 1572.5983440036.

The spelling of 3889138791 in words is "three billion, eight hundred eighty-nine million, one hundred thirty-eight thousand, seven hundred ninety-one".