2190782485890 has 256 divisors, whose sum is σ = 6133509734400. Its totient is φ = 555389049600.

The previous prime is 2190782485889. The next prime is 2190782485891. The reversal of 2190782485890 is 985842870912.

2190782485890 is a `hidden beast` number, since 2 + 1 + 9 + 0 + 7 + 8 + 2 + 48 + 589 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (2190782485889) and next prime (2190782485891).

It is not an unprimeable number, because it can be changed into a prime (2190782485891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 820209255 + ... + 820211925.

It is an arithmetic number, because the mean of its divisors is an integer number (23959022400).

Almost surely, 2^{2190782485890} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2190782485890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3066754867200).

2190782485890 is an abundant number, since it is smaller than the sum of its proper divisors (3942727248510).

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

2190782485890 is a wasteful number, since it uses less digits than its factorization.

2190782485890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3470 (or 3464 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 63.

The spelling of 2190782485890 in words is "two trillion, one hundred ninety billion, seven hundred eighty-two million, four hundred eighty-five thousand, eight hundred ninety".