1928510140550 has 48 divisors (see below), whose sum is σ = 4186684177920. Its totient is φ = 647135312160.

The previous prime is 1928510140489. The next prime is 1928510140589. The reversal of 1928510140550 is 550410158291.

It is a junction number, because it is equal to n+sod(n) for n = 1928510140498 and 1928510140507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58600880 + ... + 58633779.

It is an arithmetic number, because the mean of its divisors is an integer number (87222587040).

Almost surely, 2^{1928510140550} is an apocalyptic number.

1928510140550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1928510140550 is an abundant number, since it is smaller than the sum of its proper divisors (2258174037370).

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

1928510140550 is a wasteful number, since it uses less digits than its factorization.

1928510140550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117234725 (or 117234720 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 41.

The spelling of 1928510140550 in words is "one trillion, nine hundred twenty-eight billion, five hundred ten million, one hundred forty thousand, five hundred fifty".