3138161893 has 4 divisors (see below), whose sum is σ = 3138389280. Its totient is φ = 3137934508.

The previous prime is 3138161839. The next prime is 3138161909. The reversal of 3138161893 is 3981618313.

3138161893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 3138161893 - 2¹³ = 3138153701 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 (3138161293) 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, 91555 + ... + 121072.

It is an arithmetic number, because the mean of its divisors is an integer number (784597320).

Almost surely, 2^3138161893 is an apocalyptic number.

It is an amenable number.

3138161893 is a deficient number, since it is larger than the sum of its proper divisors (227387).

3138161893 is a wasteful number, since it uses less digits than its factorization.

3138161893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227386.

The product of its digits is 93312, while the sum is 43.

The square root of 3138161893 is about 56019.2992905124. The cubic root of 3138161893 is about 1464.0585599529.

The spelling of 3138161893 in words is "three billion, one hundred thirty-eight million, one hundred sixty-one thousand, eight hundred ninety-three".