1922491566240 has 384 divisors, whose sum is σ = 7253107545600. Its totient is φ = 427548893184.

The previous prime is 1922491566239. The next prime is 1922491566257. The reversal of 1922491566240 is 426651942291.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5933884 + ... + 6249476.

It is an arithmetic number, because the mean of its divisors is an integer number (18888300900).

Almost surely, 2^{1922491566240} is an apocalyptic number.

1922491566240 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 1922491566240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3626553772800).

1922491566240 is an abundant number, since it is smaller than the sum of its proper divisors (5330615979360).

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

1922491566240 is a wasteful number, since it uses less digits than its factorization.

1922491566240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315669 (or 315647 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 1922491566240 in words is "one trillion, nine hundred twenty-two billion, four hundred ninety-one million, five hundred sixty-six thousand, two hundred forty".