1928101445688 has 64 divisors (see below), whose sum is σ = 5258800396800. Its totient is φ = 584235175680.

The previous prime is 1928101445659. The next prime is 1928101445693. The reversal of 1928101445688 is 8865441018291.

It is a super-2 number, since 2×1928101445688² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3971553 + ... + 4430511.

It is an arithmetic number, because the mean of its divisors is an integer number (82168756200).

Almost surely, 2^{1928101445688} is an apocalyptic number.

It is an amenable number.

1928101445688 is an abundant number, since it is smaller than the sum of its proper divisors (3330698951112).

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

1928101445688 is a wasteful number, since it uses less digits than its factorization.

1928101445688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474892 (or 474888 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 57.

The spelling of 1928101445688 in words is "one trillion, nine hundred twenty-eight billion, one hundred one million, four hundred forty-five thousand, six hundred eighty-eight".