1927831816380 has 48 divisors (see below), whose sum is σ = 5398199299584. Its totient is φ = 514062749760.

The previous prime is 1927831816369. The next prime is 1927831816397. The reversal of 1927831816380 is 836181387291.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1927831816380.

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, 419769 + ... + 2007951.

It is an arithmetic number, because the mean of its divisors is an integer number (112462485408).

Almost surely, 2^{1927831816380} is an apocalyptic number.

1927831816380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1927831816380 is an abundant number, since it is smaller than the sum of its proper divisors (3470367483204).

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

1927831816380 is a wasteful number, since it uses less digits than its factorization.

1927831816380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608426 (or 1608424 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 57.

The spelling of 1927831816380 in words is "one trillion, nine hundred twenty-seven billion, eight hundred thirty-one million, eight hundred sixteen thousand, three hundred eighty".