38923009138207 has 2 divisors, whose sum is σ = 38923009138208. Its totient is φ = 38923009138206.

The previous prime is 38923009138183. The next prime is 38923009138217. The reversal of 38923009138207 is 70283190032983.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38923009138207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38923009138217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19461504569103 + 19461504569104.

It is an arithmetic number, because the mean of its divisors is an integer number (19461504569104).

Almost surely, 2^{38923009138207} is an apocalyptic number.

38923009138207 is a deficient number, since it is larger than the sum of its proper divisors (1).

38923009138207 is an equidigital number, since it uses as much as digits as its factorization.

38923009138207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 38923009138207 in words is "thirty-eight trillion, nine hundred twenty-three billion, nine million, one hundred thirty-eight thousand, two hundred seven".