1890606913020 has 384 divisors, whose sum is σ = 6778704844800. Its totient is φ = 428510767104.

The previous prime is 1890606912989. The next prime is 1890606913031. The reversal of 1890606913020 is 203196060981.

It is a happy number.

1890606913020 is a `hidden beast` number, since 1 + 8 + 9 + 0 + 606 + 9 + 1 + 30 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 711020451 + ... + 711023109.

It is an arithmetic number, because the mean of its divisors is an integer number (17652877200).

Almost surely, 2^{1890606913020} is an apocalyptic number.

1890606913020 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 1890606913020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3389352422400).

1890606913020 is an abundant number, since it is smaller than the sum of its proper divisors (4888097931780).

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

1890606913020 is a wasteful number, since it uses less digits than its factorization.

1890606913020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194 (or 4186 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 1890606913020 in words is "one trillion, eight hundred ninety billion, six hundred six million, nine hundred thirteen thousand, twenty".