19946761180 has 24 divisors (see below), whose sum is σ = 42122218320. Its totient is φ = 7934129280.

The previous prime is 19946761171. The next prime is 19946761183. The reversal of 19946761180 is 8116764991.

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (19946761183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2782281 + ... + 2789440.

It is an arithmetic number, because the mean of its divisors is an integer number (1755092430).

Almost surely, 2^19946761180 is an apocalyptic number.

19946761180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19946761180 is an abundant number, since it is smaller than the sum of its proper divisors (22175457140).

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

19946761180 is a wasteful number, since it uses less digits than its factorization.

19946761180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5571909 (or 5571907 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 52.

The spelling of 19946761180 in words is "nineteen billion, nine hundred forty-six million, seven hundred sixty-one thousand, one hundred eighty".