1999892622 has 128 divisors (see below), whose sum is σ = 5020581888. Its totient is φ = 517104000.

The previous prime is 1999892579. The next prime is 1999892623. The reversal of 1999892622 is 2262989991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999892623) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10470547 + ... + 10470737.

It is an arithmetic number, because the mean of its divisors is an integer number (39223296).

Almost surely, 2^1999892622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1999892622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2510290944).

1999892622 is an abundant number, since it is smaller than the sum of its proper divisors (3020689266).

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

1999892622 is a wasteful number, since it uses less digits than its factorization.

1999892622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494.

The product of its digits is 2519424, while the sum is 57.

The square root of 1999892622 is about 44720.1590113452. The cubic root of 1999892622 is about 1259.8985015243.

The spelling of 1999892622 in words is "one billion, nine hundred ninety-nine million, eight hundred ninety-two thousand, six hundred twenty-two".