1604145222 has 40 divisors (see below), whose sum is σ = 3648147096. Its totient is φ = 526730688.

The previous prime is 1604145209. The next prime is 1604145239. The reversal of 1604145222 is 2225414061.

1604145222 is a `hidden beast` number, since 1 + 604 + 1 + 4 + 52 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 63043 + ... + 84750.

Almost surely, 2^1604145222 is an apocalyptic number.

1604145222 is an abundant number, since it is smaller than the sum of its proper divisors (2044001874).

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

1604145222 is a wasteful number, since it uses less digits than its factorization.

1604145222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147874 (or 147865 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 1604145222 is about 40051.7817581191. The cubic root of 1604145222 is about 1170.6162828188.

Adding to 1604145222 its reverse (2225414061), we get a palindrome (3829559283).

The spelling of 1604145222 in words is "one billion, six hundred four million, one hundred forty-five thousand, two hundred twenty-two".