1861972932960 has 480 divisors, whose sum is σ = 7517742103872. Its totient is φ = 425152696320.

The previous prime is 1861972932929. The next prime is 1861972932983. The reversal of 1861972932960 is 692392791681.

1861972932960 is a `hidden beast` number, since 1 + 8 + 619 + 7 + 2 + 9 + 3 + 2 + 9 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 91889230 + ... + 91909490.

Almost surely, 2^{1861972932960} is an apocalyptic number.

1861972932960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1861972932960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3758871051936).

1861972932960 is an abundant number, since it is smaller than the sum of its proper divisors (5655769170912).

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

1861972932960 is a wasteful number, since it uses less digits than its factorization.

1861972932960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21308 (or 21291 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 63.

The spelling of 1861972932960 in words is "one trillion, eight hundred sixty-one billion, nine hundred seventy-two million, nine hundred thirty-two thousand, nine hundred sixty".