1604875553 has 2 divisors, whose sum is σ = 1604875554. Its totient is φ = 1604875552.

The previous prime is 1604875543. The next prime is 1604875637. The reversal of 1604875553 is 3555784061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1405275169 + 199600384 = 37487^2 + 14128^2 .

It is a cyclic number.

It is not a de Polignac number, because 1604875553 - 2⁴ = 1604875537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1604875523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802437776 + 802437777.

It is an arithmetic number, because the mean of its divisors is an integer number (802437777).

Almost surely, 2^1604875553 is an apocalyptic number.

It is an amenable number.

1604875553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604875553 is an equidigital number, since it uses as much as digits as its factorization.

1604875553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504000, while the sum is 44.

The square root of 1604875553 is about 40060.8980553357. The cubic root of 1604875553 is about 1170.7939075619.

The spelling of 1604875553 in words is "one billion, six hundred four million, eight hundred seventy-five thousand, five hundred fifty-three".