38406905413 has 4 divisors (see below), whose sum is σ = 38407297408. Its totient is φ = 38406513420.

The previous prime is 38406905401. The next prime is 38406905437. The reversal of 38406905413 is 31450960483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38406905413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38406905413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38406905213) 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 in 3 ways as a sum of consecutive naturals, for example, 93778 + ... + 292588.

It is an arithmetic number, because the mean of its divisors is an integer number (9601824352).

Almost surely, 2^38406905413 is an apocalyptic number.

It is an amenable number.

38406905413 is a deficient number, since it is larger than the sum of its proper divisors (391995).

38406905413 is a wasteful number, since it uses less digits than its factorization.

38406905413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391994.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 38406905413 in words is "thirty-eight billion, four hundred six million, nine hundred five thousand, four hundred thirteen".