3138893 has 2 divisors, whose sum is σ = 3138894. Its totient is φ = 3138892.

The previous prime is 3138881. The next prime is 3138899. The reversal of 3138893 is 3988313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3034564 + 104329 = 1742^2 + 323^2 .

It is a cyclic number.

It is not a de Polignac number, because 3138893 - 2⁸ = 3138637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3138899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569446 + 1569447.

It is an arithmetic number, because the mean of its divisors is an integer number (1569447).

Almost surely, 2^3138893 is an apocalyptic number.

It is an amenable number.

3138893 is a deficient number, since it is larger than the sum of its proper divisors (1).

3138893 is an equidigital number, since it uses as much as digits as its factorization.

3138893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The square root of 3138893 is about 1771.6921290111. The cubic root of 3138893 is about 146.4172246498.

The spelling of 3138893 in words is "three million, one hundred thirty-eight thousand, eight hundred ninety-three".