1604500745 has 16 divisors (see below), whose sum is σ = 1988405328. Its totient is φ = 1241982720.

The previous prime is 1604500741. The next prime is 1604500787. The reversal of 1604500745 is 5470054061.

It can be written as a sum of positive squares in 8 ways, for example, as 248125504 + 1356375241 = 15752^2 + 36829^2 .

It is not a de Polignac number, because 1604500745 - 2² = 1604500741 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1604500741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9527 + ... + 57443.

It is an arithmetic number, because the mean of its divisors is an integer number (124275333).

Almost surely, 2^1604500745 is an apocalyptic number.

It is an amenable number.

1604500745 is a deficient number, since it is larger than the sum of its proper divisors (383904583).

1604500745 is a wasteful number, since it uses less digits than its factorization.

1604500745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48140.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 1604500745 is about 40056.2198041702. The cubic root of 1604500745 is about 1170.7027567584.

The spelling of 1604500745 in words is "one billion, six hundred four million, five hundred thousand, seven hundred forty-five".