38921849169 has 64 divisors (see below), whose sum is σ = 61500020736. Its totient is φ = 21434886144.

The previous prime is 38921849077. The next prime is 38921849173. The reversal of 38921849169 is 96194812983.

It is not a de Polignac number, because 38921849169 - 2⁸ = 38921848913 is a prime.

It is a super-2 number, since 2×38921849169² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38921849069) 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 63 ways as a sum of consecutive naturals, for example, 51415539 + ... + 51416295.

It is an arithmetic number, because the mean of its divisors is an integer number (960937824).

Almost surely, 2^38921849169 is an apocalyptic number.

It is an amenable number.

38921849169 is a deficient number, since it is larger than the sum of its proper divisors (22578171567).

38921849169 is a wasteful number, since it uses less digits than its factorization.

38921849169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494.

The product of its digits is 6718464, while the sum is 60.

The spelling of 38921849169 in words is "thirty-eight billion, nine hundred twenty-one million, eight hundred forty-nine thousand, one hundred sixty-nine".