38938894069 has 2 divisors, whose sum is σ = 38938894070. Its totient is φ = 38938894068.

The previous prime is 38938894013. The next prime is 38938894073. The reversal of 38938894069 is 96049883983.

38938894069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37302287044 + 1636607025 = 193138^2 + 40455^2 .

It is a cyclic number.

It is not a de Polignac number, because 38938894069 - 2⁹ = 38938893557 is a prime.

It is a super-2 number, since 2×38938894069² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38938893995 and 38938894013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38938894469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19469447034 + 19469447035.

It is an arithmetic number, because the mean of its divisors is an integer number (19469447035).

Almost surely, 2^38938894069 is an apocalyptic number.

It is an amenable number.

38938894069 is a deficient number, since it is larger than the sum of its proper divisors (1).

38938894069 is an equidigital number, since it uses as much as digits as its factorization.

38938894069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80621568, while the sum is 67.

The spelling of 38938894069 in words is "thirty-eight billion, nine hundred thirty-eight million, eight hundred ninety-four thousand, sixty-nine".