1906562868 has 96 divisors (see below), whose sum is σ = 5270888448. Its totient is φ = 524880000.

The previous prime is 1906562843. The next prime is 1906562891. The reversal of 1906562868 is 8682656091.

It is a self number, because there is not a number n which added to its sum of digits gives 1906562868.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 652146 + ... + 655062.

It is an arithmetic number, because the mean of its divisors is an integer number (54905088).

Almost surely, 2^1906562868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1906562868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2635444224).

1906562868 is an abundant number, since it is smaller than the sum of its proper divisors (3364325580).

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

1906562868 is a wasteful number, since it uses less digits than its factorization.

1906562868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213 (or 3211 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The square root of 1906562868 is about 43664.2057983424. The cubic root of 1906562868 is about 1239.9867471702.

The spelling of 1906562868 in words is "one billion, nine hundred six million, five hundred sixty-two thousand, eight hundred sixty-eight".