388889980541 has 8 divisors (see below), whose sum is σ = 403569074520. Its totient is φ = 374295492928.

The previous prime is 388889980421. The next prime is 388889980543. The reversal of 388889980541 is 145089988883.

It can be written as a sum of positive squares in 4 ways, for example, as 36807957316 + 352082023225 = 191854^2 + 593365^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 388889980541 - 2²⁶ = 388822871677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388889980543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21142226 + ... + 21160611.

It is an arithmetic number, because the mean of its divisors is an integer number (50446134315).

Almost surely, 2^388889980541 is an apocalyptic number.

It is an amenable number.

388889980541 is a deficient number, since it is larger than the sum of its proper divisors (14679093979).

388889980541 is a wasteful number, since it uses less digits than its factorization.

388889980541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42303183.

The product of its (nonzero) digits is 159252480, while the sum is 71.

The spelling of 388889980541 in words is "three hundred eighty-eight billion, eight hundred eighty-nine million, nine hundred eighty thousand, five hundred forty-one".