1604243145 has 16 divisors (see below), whose sum is σ = 2567367360. Its totient is φ = 855403584.

The previous prime is 1604243129. The next prime is 1604243171. The reversal of 1604243145 is 5413424061.

It is not a de Polignac number, because 1604243145 - 2⁴ = 1604243129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78891 + ... + 97119.

It is an arithmetic number, because the mean of its divisors is an integer number (160460460).

Almost surely, 2^1604243145 is an apocalyptic number.

1604243145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1604243145 is a deficient number, since it is larger than the sum of its proper divisors (963124215).

1604243145 is a wasteful number, since it uses less digits than its factorization.

1604243145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24104.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1604243145 is about 40053.0041944421. The cubic root of 1604243145 is about 1170.6401019270.

The spelling of 1604243145 in words is "one billion, six hundred four million, two hundred forty-three thousand, one hundred forty-five".