38691208349 has 16 divisors (see below), whose sum is σ = 40140672000. Its totient is φ = 37267893936.

The previous prime is 38691208337. The next prime is 38691208357. The reversal of 38691208349 is 94380219683.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 38691208349 - 2⁴ = 38691208333 is a prime.

It is a super-3 number, since 3×38691208349³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38691208349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38691208379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2993102 + ... + 3006000.

It is an arithmetic number, because the mean of its divisors is an integer number (2508792000).

Almost surely, 2^38691208349 is an apocalyptic number.

It is an amenable number.

38691208349 is a deficient number, since it is larger than the sum of its proper divisors (1449463651).

38691208349 is a wasteful number, since it uses less digits than its factorization.

38691208349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13904.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 38691208349 in words is "thirty-eight billion, six hundred ninety-one million, two hundred eight thousand, three hundred forty-nine".