1604359326 has 32 divisors (see below), whose sum is σ = 3476487168. Its totient is φ = 491621760.

The previous prime is 1604359321. The next prime is 1604359327. The reversal of 1604359326 is 6239534061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604359321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178510 + ... + 187281.

It is an arithmetic number, because the mean of its divisors is an integer number (108640224).

Almost surely, 2^1604359326 is an apocalyptic number.

1604359326 is an abundant number, since it is smaller than the sum of its proper divisors (1872127842).

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

1604359326 is a wasteful number, since it uses less digits than its factorization.

1604359326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365856.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 1604359326 is about 40054.4545088308. The cubic root of 1604359326 is about 1170.6683609132.

The spelling of 1604359326 in words is "one billion, six hundred four million, three hundred fifty-nine thousand, three hundred twenty-six".