1604928097 has 2 divisors, whose sum is σ = 1604928098. Its totient is φ = 1604928096.

The previous prime is 1604928079. The next prime is 1604928133. The reversal of 1604928097 is 7908294061.

Together with previous prime (1604928079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1571646736 + 33281361 = 39644^2 + 5769^2 .

It is a cyclic number.

It is not a de Polignac number, because 1604928097 - 2⁷ = 1604927969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1604928007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802464048 + 802464049.

It is an arithmetic number, because the mean of its divisors is an integer number (802464049).

Almost surely, 2^1604928097 is an apocalyptic number.

It is an amenable number.

1604928097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604928097 is an equidigital number, since it uses as much as digits as its factorization.

1604928097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1604928097 is about 40061.5538515420. The cubic root of 1604928097 is about 1170.8066847777.

The spelling of 1604928097 in words is "one billion, six hundred four million, nine hundred twenty-eight thousand, ninety-seven".