1604002222 has 4 divisors (see below), whose sum is σ = 2406003336. Its totient is φ = 802001110.

The previous prime is 1604002219. The next prime is 1604002247. The reversal of 1604002222 is 2222004061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2222004061 = 41 ⋅54195221.

It is a self number, because there is not a number n which added to its sum of digits gives 1604002222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401000554 + ... + 401000557.

It is an arithmetic number, because the mean of its divisors is an integer number (601500834).

Almost surely, 2^1604002222 is an apocalyptic number.

1604002222 is a deficient number, since it is larger than the sum of its proper divisors (802001114).

1604002222 is an equidigital number, since it uses as much as digits as its factorization.

1604002222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802001113.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1604002222 is about 40049.9965293382. The cubic root of 1604002222 is about 1170.5814972935.

Adding to 1604002222 its reverse (2222004061), we get a palindrome (3826006283).

The spelling of 1604002222 in words is "one billion, six hundred four million, two thousand, two hundred twenty-two".