1604614673 has 2 divisors, whose sum is σ = 1604614674. Its totient is φ = 1604614672.

The previous prime is 1604614621. The next prime is 1604614723. The reversal of 1604614673 is 3764164061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1529826769 + 74787904 = 39113^2 + 8648^2 .

It is a cyclic number.

It is not a de Polignac number, because 1604614673 - 2¹² = 1604610577 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 (1604614603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802307336 + 802307337.

It is an arithmetic number, because the mean of its divisors is an integer number (802307337).

Almost surely, 2^1604614673 is an apocalyptic number.

It is an amenable number.

1604614673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604614673 is an equidigital number, since it uses as much as digits as its factorization.

1604614673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 1604614673 is about 40057.6418801706. The cubic root of 1604614673 is about 1170.7304647889.

The spelling of 1604614673 in words is "one billion, six hundred four million, six hundred fourteen thousand, six hundred seventy-three".