1922997904 has 45 divisors (see below), whose sum is σ = 3939051177. Its totient is φ = 909315072.

The previous prime is 1922997899. The next prime is 1922997913. The reversal of 1922997904 is 4097992291.

The square root of 1922997904 is 43852.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1909690000 + 13307904 = 43700^2 + 3648^2 .

It is a super-3 number, since 3×1922997904³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3332464 + ... + 3333040.

Almost surely, 2^1922997904 is an apocalyptic number.

1922997904 is the 43852-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1922997904

1922997904 is an abundant number, since it is smaller than the sum of its proper divisors (2016053273).

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

1922997904 is an frugal number, since it uses more digits than its factorization.

1922997904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 52.

The cubic root of 1922997904 is about 1243.5395538184.

The spelling of 1922997904 in words is "one billion, nine hundred twenty-two million, nine hundred ninety-seven thousand, nine hundred four".