3138017945 has 8 divisors (see below), whose sum is σ = 3766339080. Its totient is φ = 2509936000.

The previous prime is 3138017929. The next prime is 3138017959. The reversal of 3138017945 is 5497108313.

3138017945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1501330009 + 1636687936 = 38747^2 + 40456^2 .

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

It is not a de Polignac number, because 3138017945 - 2⁴ = 3138017929 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29540 + ... + 84549.

It is an arithmetic number, because the mean of its divisors is an integer number (470792385).

Almost surely, 2^3138017945 is an apocalyptic number.

It is an amenable number.

3138017945 is a deficient number, since it is larger than the sum of its proper divisors (628321135).

3138017945 is a wasteful number, since it uses less digits than its factorization.

3138017945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119595.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 3138017945 is about 56018.0144685618. The cubic root of 3138017945 is about 1464.0361740753.

The spelling of 3138017945 in words is "three billion, one hundred thirty-eight million, seventeen thousand, nine hundred forty-five".