38406905371 has 2 divisors, whose sum is σ = 38406905372. Its totient is φ = 38406905370.

The previous prime is 38406905351. The next prime is 38406905377. The reversal of 38406905371 is 17350960483.

It is a strong prime.

It is an emirp because it is prime and its reverse (17350960483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38406905371 - 2⁹ = 38406904859 is a prime.

It is not a weakly prime, because it can be changed into another prime (38406905377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19203452685 + 19203452686.

It is an arithmetic number, because the mean of its divisors is an integer number (19203452686).

Almost surely, 2^38406905371 is an apocalyptic number.

38406905371 is a deficient number, since it is larger than the sum of its proper divisors (1).

38406905371 is an equidigital number, since it uses as much as digits as its factorization.

38406905371 is an evil number, because the sum of its binary digits is even.

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

The spelling of 38406905371 in words is "thirty-eight billion, four hundred six million, nine hundred five thousand, three hundred seventy-one".