3881549538 has 32 divisors (see below), whose sum is σ = 8637916800. Its totient is φ = 1292012208.

The previous prime is 3881549537. The next prime is 3881549543. The reversal of 3881549538 is 8359451883.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3881549533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12406 + ... + 88977.

It is an arithmetic number, because the mean of its divisors is an integer number (269934900).

Almost surely, 2^3881549538 is an apocalyptic number.

3881549538 is an abundant number, since it is smaller than the sum of its proper divisors (4756367262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3881549538 is a wasteful number, since it uses less digits than its factorization.

3881549538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102103 (or 102097 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The square root of 3881549538 is about 62302.0829346820. The cubic root of 3881549538 is about 1571.5747567798.

The spelling of 3881549538 in words is "three billion, eight hundred eighty-one million, five hundred forty-nine thousand, five hundred thirty-eight".