38855887549 has 2 divisors, whose sum is σ = 38855887550. Its totient is φ = 38855887548.

The previous prime is 38855887541. The next prime is 38855887571. The reversal of 38855887549 is 94578855883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19951562500 + 18904325049 = 141250^2 + 137493^2 .

It is a cyclic number.

It is not a de Polignac number, because 38855887549 - 2³ = 38855887541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38855887541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19427943774 + 19427943775.

It is an arithmetic number, because the mean of its divisors is an integer number (19427943775).

Almost surely, 2^38855887549 is an apocalyptic number.

It is an amenable number.

38855887549 is a deficient number, since it is larger than the sum of its proper divisors (1).

38855887549 is an equidigital number, since it uses as much as digits as its factorization.

38855887549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072000, while the sum is 70.

The spelling of 38855887549 in words is "thirty-eight billion, eight hundred fifty-five million, eight hundred eighty-seven thousand, five hundred forty-nine".