1861703840860 has 24 divisors (see below), whose sum is σ = 3909616956000. Its totient is φ = 744674128704.

The previous prime is 1861703840807. The next prime is 1861703840881. The reversal of 1861703840860 is 680483071681.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1861703840798 and 1861703840807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1889377 + ... + 2700583.

It is an arithmetic number, because the mean of its divisors is an integer number (162900706500).

Almost surely, 2^{1861703840860} is an apocalyptic number.

1861703840860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1861703840860 is an abundant number, since it is smaller than the sum of its proper divisors (2047913115140).

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

1861703840860 is a wasteful number, since it uses less digits than its factorization.

1861703840860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925965 (or 925963 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 1861703840860 in words is "one trillion, eight hundred sixty-one billion, seven hundred three million, eight hundred forty thousand, eight hundred sixty".