388978384613 has 32 divisors (see below), whose sum is σ = 483561641472. Its totient is φ = 304667308800.

The previous prime is 388978384609. The next prime is 388978384657. The reversal of 388978384613 is 316483879883.

It is a cyclic number.

It is not a de Polignac number, because 388978384613 - 2² = 388978384609 is a prime.

It is a super-2 number, since 2×388978384613² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388978384603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35808803 + ... + 35819663.

It is an arithmetic number, because the mean of its divisors is an integer number (15111301296).

Almost surely, 2^388978384613 is an apocalyptic number.

It is an amenable number.

388978384613 is a deficient number, since it is larger than the sum of its proper divisors (94583256859).

388978384613 is a wasteful number, since it uses less digits than its factorization.

388978384613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14805.

The product of its digits is 167215104, while the sum is 68.

The spelling of 388978384613 in words is "three hundred eighty-eight billion, nine hundred seventy-eight million, three hundred eighty-four thousand, six hundred thirteen".