1922557404 has 96 divisors (see below), whose sum is σ = 4958646336. Its totient is φ = 577208320.

The previous prime is 1922557393. The next prime is 1922557409. The reversal of 1922557404 is 4047552291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1922557409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 441124 + ... + 445460.

It is an arithmetic number, because the mean of its divisors is an integer number (51652566).

Almost surely, 2^1922557404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1922557404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2479323168).

1922557404 is an abundant number, since it is smaller than the sum of its proper divisors (3036088932).

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

1922557404 is a wasteful number, since it uses less digits than its factorization.

1922557404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4455 (or 4453 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 1922557404 is about 43846.9771364002. The cubic root of 1922557404 is about 1243.4445942756. Note that the first 3 decimals are identical.

The spelling of 1922557404 in words is "one billion, nine hundred twenty-two million, five hundred fifty-seven thousand, four hundred four".