38694925405 has 4 divisors (see below), whose sum is σ = 46433910492. Its totient is φ = 30955940320.

The previous prime is 38694925363. The next prime is 38694925421. The reversal of 38694925405 is 50452949683.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3983881924 + 34711043481 = 63118^2 + 186309^2 .

It is not a de Polignac number, because 38694925405 - 2¹¹ = 38694923357 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 3869492536 + ... + 3869492545.

It is an arithmetic number, because the mean of its divisors is an integer number (11608477623).

Almost surely, 2^38694925405 is an apocalyptic number.

It is an amenable number.

38694925405 is a deficient number, since it is larger than the sum of its proper divisors (7738985087).

38694925405 is an equidigital number, since it uses as much as digits as its factorization.

38694925405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7738985086.

The product of its (nonzero) digits is 9331200, while the sum is 55.

The spelling of 38694925405 in words is "thirty-eight billion, six hundred ninety-four million, nine hundred twenty-five thousand, four hundred five".