38934189918929 has 2 divisors, whose sum is σ = 38934189918930. Its totient is φ = 38934189918928.

The previous prime is 38934189918893. The next prime is 38934189919067. The reversal of 38934189918929 is 92981998143983.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38398446435904 + 535743483025 = 6196648^2 + 731945^2 .

It is a cyclic number.

It is not a de Polignac number, because 38934189918929 - 2²⁴ = 38934173141713 is a prime.

It is a super-2 number, since 2×38934189918929² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38934189917929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19467094959464 + 19467094959465.

It is an arithmetic number, because the mean of its divisors is an integer number (19467094959465).

Almost surely, 2^{38934189918929} is an apocalyptic number.

It is an amenable number.

38934189918929 is a deficient number, since it is larger than the sum of its proper divisors (1).

38934189918929 is an equidigital number, since it uses as much as digits as its factorization.

38934189918929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2176782336, while the sum is 83.

The spelling of 38934189918929 in words is "thirty-eight trillion, nine hundred thirty-four billion, one hundred eighty-nine million, nine hundred eighteen thousand, nine hundred twenty-nine".