1981192760 has 16 divisors (see below), whose sum is σ = 4457683800. Its totient is φ = 792477088.

The previous prime is 1981192721. The next prime is 1981192783. The reversal of 1981192760 is 672911891.

1981192760 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24764870 + ... + 24764949.

Almost surely, 2^1981192760 is an apocalyptic number.

1981192760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1981192760 is an abundant number, since it is smaller than the sum of its proper divisors (2476491040).

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

1981192760 is a wasteful number, since it uses less digits than its factorization.

1981192760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49529830 (or 49529826 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 44.

The square root of 1981192760 is about 44510.5915485292. The cubic root of 1981192760 is about 1255.9593327333.

The spelling of 1981192760 in words is "one billion, nine hundred eighty-one million, one hundred ninety-two thousand, seven hundred sixty".