1922071680 has 384 divisors, whose sum is σ = 7297879680. Its totient is φ = 481738752.

The previous prime is 1922071661. The next prime is 1922071681. The reversal of 1922071680 is 861702291.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1922071681) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2643477 + ... + 2644203.

It is an arithmetic number, because the mean of its divisors is an integer number (19004895).

Almost surely, 2^1922071680 is an apocalyptic number.

1922071680 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 1922071680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3648939840).

1922071680 is an abundant number, since it is smaller than the sum of its proper divisors (5375808000).

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

1922071680 is an equidigital number, since it uses as much as digits as its factorization.

1922071680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1922071680 is about 43841.4379326226. The cubic root of 1922071680 is about 1243.3398688803.

The spelling of 1922071680 in words is "one billion, nine hundred twenty-two million, seventy-one thousand, six hundred eighty".