1920729018620 has 48 divisors (see below), whose sum is σ = 4245953527200. Its totient is φ = 727832666880.

The previous prime is 1920729018583. The next prime is 1920729018653. The reversal of 1920729018620 is 268109270291.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17250086 + ... + 17361074.

It is an arithmetic number, because the mean of its divisors is an integer number (88457365150).

Almost surely, 2^{1920729018620} is an apocalyptic number.

1920729018620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1920729018620 is an abundant number, since it is smaller than the sum of its proper divisors (2325224508580).

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

1920729018620 is a wasteful number, since it uses less digits than its factorization.

1920729018620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156558 (or 156556 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 1920729018620 in words is "one trillion, nine hundred twenty billion, seven hundred twenty-nine million, eighteen thousand, six hundred twenty".