388798017849 has 48 divisors (see below), whose sum is σ = 613941735680. Its totient is φ = 245199266640.

The previous prime is 388798017841. The next prime is 388798017851. The reversal of 388798017849 is 948710897883.

388798017849 is a `hidden beast` number, since 388 + 79 + 8 + 0 + 178 + 4 + 9 = 666.

It is not a de Polignac number, because 388798017849 - 2³ = 388798017841 is a prime.

It is a super-2 number, since 2×388798017849² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388798017841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3129414 + ... + 3251280.

Almost surely, 2^388798017849 is an apocalyptic number.

It is an amenable number.

388798017849 is a deficient number, since it is larger than the sum of its proper divisors (225143717831).

388798017849 is a wasteful number, since it uses less digits than its factorization.

388798017849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122592 (or 122580 counting only the distinct ones).

The product of its (nonzero) digits is 195084288, while the sum is 72.

The spelling of 388798017849 in words is "three hundred eighty-eight billion, seven hundred ninety-eight million, seventeen thousand, eight hundred forty-nine".