1861980327936 has 585 divisors, whose sum is σ = 5871627995079. Its totient is φ = 587911053312.

The previous prime is 1861980327917. The next prime is 1861980327967. The reversal of 1861980327936 is 6397230891681.

The square root of 1861980327936 is 1364544.

It is a perfect power (a square), and thus also a powerful number.

1861980327936 is a `hidden beast` number, since 1 + 8 + 619 + 8 + 0 + 3 + 2 + 7 + 9 + 3 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 18077478861 + ... + 18077478963.

Almost surely, 2^{1861980327936} is an apocalyptic number.

1861980327936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1861980327936 is the 1364544-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1861980327936

1861980327936 is an abundant number, since it is smaller than the sum of its proper divisors (4009647667143).

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

1861980327936 is an frugal number, since it uses more digits than its factorization.

1861980327936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 1861980327936 in words is "one trillion, eight hundred sixty-one billion, nine hundred eighty million, three hundred twenty-seven thousand, nine hundred thirty-six".