38813858501405 has 8 divisors (see below), whose sum is σ = 50159447909592. Its totient is φ = 28662541662528.

The previous prime is 38813858501387. The next prime is 38813858501549. The reversal of 38813858501405 is 50410585831883.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2561260955236 + 36252597546169 = 1600394^2 + 6021013^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38813858501405 is a prime.

It is a super-2 number, since 2×38813858501405² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298568142254 + ... + 298568142383.

It is an arithmetic number, because the mean of its divisors is an integer number (6269930988699).

Almost surely, 2^{38813858501405} is an apocalyptic number.

It is an amenable number.

38813858501405 is a deficient number, since it is larger than the sum of its proper divisors (11345589408187).

38813858501405 is a wasteful number, since it uses less digits than its factorization.

38813858501405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597136284655.

The product of its (nonzero) digits is 18432000, while the sum is 59.

The spelling of 38813858501405 in words is "thirty-eight trillion, eight hundred thirteen billion, eight hundred fifty-eight million, five hundred one thousand, four hundred five".