1922139960 has 128 divisors (see below), whose sum is σ = 6243471360. Its totient is φ = 470592000.

The previous prime is 1922139953. The next prime is 1922139977. The reversal of 1922139960 is 699312291.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 294735 + ... + 301185.

It is an arithmetic number, because the mean of its divisors is an integer number (48777120).

Almost surely, 2^1922139960 is an apocalyptic number.

1922139960 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 1922139960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3121735680).

1922139960 is an abundant number, since it is smaller than the sum of its proper divisors (4321331400).

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

1922139960 is a wasteful number, since it uses less digits than its factorization.

1922139960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669 (or 6665 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 1922139960 is about 43842.2166410413. The cubic root of 1922139960 is about 1243.3545915780.

The spelling of 1922139960 in words is "one billion, nine hundred twenty-two million, one hundred thirty-nine thousand, nine hundred sixty".