3139205745 has 64 divisors (see below), whose sum is σ = 5750841600. Its totient is φ = 1449446400.

The previous prime is 3139205711. The next prime is 3139205747. The reversal of 3139205745 is 5475029313.

It is a happy number.

It is not a de Polignac number, because 3139205745 - 2⁶ = 3139205681 is a prime.

It is a super-2 number, since 2×3139205745² = 19709225418882010050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (3139205747) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 370011 + ... + 378399.

It is an arithmetic number, because the mean of its divisors is an integer number (89856900).

Almost surely, 2^3139205745 is an apocalyptic number.

It is an amenable number.

3139205745 is a deficient number, since it is larger than the sum of its proper divisors (2611635855).

3139205745 is a wasteful number, since it uses less digits than its factorization.

3139205745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8530.

The product of its (nonzero) digits is 113400, while the sum is 39.

The square root of 3139205745 is about 56028.6154121267. The cubic root of 3139205745 is about 1464.2208727005.

The spelling of 3139205745 in words is "three billion, one hundred thirty-nine million, two hundred five thousand, seven hundred forty-five".