388621622498 has 6 divisors (see below), whose sum is σ = 582933756171. Its totient is φ = 194310370442.

The previous prime is 388621622491. The next prime is 388621622507. The reversal of 388621622498 is 894226126883.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 194310811249 + 194310811249 = 440807^2 + 440807^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=440807.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388621622491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 661211 + ... + 1102017.

Almost surely, 2^388621622498 is an apocalyptic number.

388621622498 is a deficient number, since it is larger than the sum of its proper divisors (194312133673).

388621622498 is an frugal number, since it uses more digits than its factorization.

388621622498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881616 (or 440809 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 59.

The spelling of 388621622498 in words is "three hundred eighty-eight billion, six hundred twenty-one million, six hundred twenty-two thousand, four hundred ninety-eight".