3138745517 has 8 divisors (see below), whose sum is σ = 3189318720. Its totient is φ = 3088572480.

The previous prime is 3138745507. The next prime is 3138745523. The reversal of 3138745517 is 7155478313.

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

It is a cyclic number.

It is not a de Polignac number, because 3138745517 - 2⁴ = 3138745501 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 (3138745507) 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, 84209 + ... + 115622.

It is an arithmetic number, because the mean of its divisors is an integer number (398664840).

Almost surely, 2^3138745517 is an apocalyptic number.

It is an amenable number.

3138745517 is a deficient number, since it is larger than the sum of its proper divisors (50573203).

3138745517 is a wasteful number, since it uses less digits than its factorization.

3138745517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200083.

The product of its digits is 352800, while the sum is 44.

The square root of 3138745517 is about 56024.5081816878. The cubic root of 3138745517 is about 1464.1493144325.

The spelling of 3138745517 in words is "three billion, one hundred thirty-eight million, seven hundred forty-five thousand, five hundred seventeen".