1899786966 has 32 divisors (see below), whose sum is σ = 4737132288. Its totient is φ = 493451040.

The previous prime is 1899786937. The next prime is 1899786983. The reversal of 1899786966 is 6696879981.

It is a self number, because there is not a number n which added to its sum of digits gives 1899786966.

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 15 ways as a sum of consecutive naturals, for example, 2055585 + ... + 2056508.

It is an arithmetic number, because the mean of its divisors is an integer number (148035384).

Almost surely, 2^1899786966 is an apocalyptic number.

1899786966 is an abundant number, since it is smaller than the sum of its proper divisors (2837345322).

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

1899786966 is a wasteful number, since it uses less digits than its factorization.

1899786966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112116.

The product of its digits is 70543872, while the sum is 69.

The square root of 1899786966 is about 43586.5456993325. The cubic root of 1899786966 is about 1238.5160373934.

The spelling of 1899786966 in words is "one billion, eight hundred ninety-nine million, seven hundred eighty-six thousand, nine hundred sixty-six".