3138965 has 8 divisors (see below), whose sum is σ = 3988440. Its totient is φ = 2363392.

The previous prime is 3138953. The next prime is 3138991. The reversal of 3138965 is 5698313.

It can be written as a sum of positive squares in 4 ways, for example, as 966289 + 2172676 = 983^2 + 1474^2 .

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 3138965 - 2¹⁰ = 3137941 is a prime.

It is a congruent 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, 18380 + ... + 18549.

It is an arithmetic number, because the mean of its divisors is an integer number (498555).

Almost surely, 2^3138965 is an apocalyptic number.

It is an amenable number.

3138965 is a deficient number, since it is larger than the sum of its proper divisors (849475).

3138965 is a wasteful number, since it uses less digits than its factorization.

3138965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36951.

The product of its digits is 19440, while the sum is 35.

The square root of 3138965 is about 1771.7124484521. The cubic root of 3138965 is about 146.4183441484.

The spelling of 3138965 in words is "three million, one hundred thirty-eight thousand, nine hundred sixty-five".