388888894450 has 144 divisors (see below), whose sum is σ = 890186328000. Its totient is φ = 125678044800.

The previous prime is 388888894409. The next prime is 388888894481. The reversal of 388888894450 is 54498888883.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9242460 + ... + 9284440.

It is an arithmetic number, because the mean of its divisors is an integer number (6181849500).

Almost surely, 2^388888894450 is an apocalyptic number.

388888894450 is an abundant number, since it is smaller than the sum of its proper divisors (501297433550).

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

388888894450 is a wasteful number, since it uses less digits than its factorization.

388888894450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42225 (or 42213 counting only the distinct ones).

The product of its (nonzero) digits is 566231040, while the sum is 73.

The spelling of 388888894450 in words is "three hundred eighty-eight billion, eight hundred eighty-eight million, eight hundred ninety-four thousand, four hundred fifty".