638714119 has 2 divisors, whose sum is σ = 638714120. Its totient is φ = 638714118.

The previous prime is 638714059. The next prime is 638714129. The reversal of 638714119 is 911417836.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-638714119 is a prime.

It is a super-2 number, since 2×638714119² = 815911451619892322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (638714129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319357059 + 319357060.

It is an arithmetic number, because the mean of its divisors is an integer number (319357060).

Almost surely, 2^638714119 is an apocalyptic number.

638714119 is a deficient number, since it is larger than the sum of its proper divisors (1).

638714119 is an equidigital number, since it uses as much as digits as its factorization.

638714119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 40.

The square root of 638714119 is about 25272.7940481459. The cubic root of 638714119 is about 861.1963334938.

The spelling of 638714119 in words is "six hundred thirty-eight million, seven hundred fourteen thousand, one hundred nineteen".