1992227380 has 96 divisors (see below), whose sum is σ = 4933272960. Its totient is φ = 666247680.

The previous prime is 1992227357. The next prime is 1992227381. The reversal of 1992227380 is 837222991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992227381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 876886 + ... + 879154.

It is an arithmetic number, because the mean of its divisors is an integer number (51388260).

Almost surely, 2^1992227380 is an apocalyptic number.

1992227380 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 1992227380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2466636480).

1992227380 is an abundant number, since it is smaller than the sum of its proper divisors (2941045580).

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

1992227380 is a wasteful number, since it uses less digits than its factorization.

1992227380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609 (or 2607 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1992227380 is about 44634.3744215151. The cubic root of 1992227380 is about 1258.2867830486.

It can be divided in two parts, 199222 and 7380, that added together give a palindrome (206602).

The spelling of 1992227380 in words is "one billion, nine hundred ninety-two million, two hundred twenty-seven thousand, three hundred eighty".