1604472523 has 4 divisors (see below), whose sum is σ = 1604580208. Its totient is φ = 1604364840.

The previous prime is 1604472503. The next prime is 1604472533. The reversal of 1604472523 is 3252744061.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1604472523 - 2⁹ = 1604472011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1604472503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27048 + ... + 62773.

It is an arithmetic number, because the mean of its divisors is an integer number (401145052).

Almost surely, 2^1604472523 is an apocalyptic number.

1604472523 is a deficient number, since it is larger than the sum of its proper divisors (107685).

1604472523 is an equidigital number, since it uses as much as digits as its factorization.

1604472523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107684.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 1604472523 is about 40055.8675227488. The cubic root of 1604472523 is about 1170.6958927817.

The spelling of 1604472523 in words is "one billion, six hundred four million, four hundred seventy-two thousand, five hundred twenty-three".