1922665312 has 72 divisors (see below), whose sum is σ = 4033520064. Its totient is φ = 901764864.

The previous prime is 1922665307. The next prime is 1922665343. The reversal of 1922665312 is 2135662291.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 896113 + ... + 898255.

It is an arithmetic number, because the mean of its divisors is an integer number (56021112).

Almost surely, 2^1922665312 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 1922665312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2016760032).

1922665312 is an abundant number, since it is smaller than the sum of its proper divisors (2110854752).

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

1922665312 is a wasteful number, since it uses less digits than its factorization.

1922665312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252 (or 2221 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 1922665312 is about 43848.2076258540. The cubic root of 1922665312 is about 1243.4678575791.

The spelling of 1922665312 in words is "one billion, nine hundred twenty-two million, six hundred sixty-five thousand, three hundred twelve".