3775138889 has 4 divisors (see below), whose sum is σ = 3778363920. Its totient is φ = 3771913860.

The previous prime is 3775138859. The next prime is 3775138891. The reversal of 3775138889 is 9888315773.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3775138889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3775138849) 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, 1610759 + ... + 1613100.

It is an arithmetic number, because the mean of its divisors is an integer number (944590980).

Almost surely, 2^3775138889 is an apocalyptic number.

It is an amenable number.

3775138889 is a deficient number, since it is larger than the sum of its proper divisors (3225031).

3775138889 is a wasteful number, since it uses less digits than its factorization.

3775138889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225030.

The product of its digits is 10160640, while the sum is 59.

The square root of 3775138889 is about 61442.1588894791. The cubic root of 3775138889 is about 1557.0801851029.

The spelling of 3775138889 in words is "three billion, seven hundred seventy-five million, one hundred thirty-eight thousand, eight hundred eighty-nine".