938135647 has 2 divisors, whose sum is σ = 938135648. Its totient is φ = 938135646.

The previous prime is 938135623. The next prime is 938135677. The reversal of 938135647 is 746531839.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 938135647 - 2⁷ = 938135519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 938135597 and 938135606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (938135677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469067823 + 469067824.

It is an arithmetic number, because the mean of its divisors is an integer number (469067824).

Almost surely, 2^938135647 is an apocalyptic number.

938135647 is a deficient number, since it is larger than the sum of its proper divisors (1).

938135647 is an equidigital number, since it uses as much as digits as its factorization.

938135647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 46.

The square root of 938135647 is about 30629.0000979464. Note that the first 4 decimals coincide. The cubic root of 938135647 is about 978.9380579961.

The spelling of 938135647 in words is "nine hundred thirty-eight million, one hundred thirty-five thousand, six hundred forty-seven".