1604001910897 has 2 divisors, whose sum is σ = 1604001910898. Its totient is φ = 1604001910896.

The previous prime is 1604001910867. The next prime is 1604001910969. The reversal of 1604001910897 is 7980191004061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1381292480656 + 222709430241 = 1175284^2 + 471921^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1604001910897 is a prime.

It is a super-2 number, since 2×1604001910897² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1604001910867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802000955448 + 802000955449.

It is an arithmetic number, because the mean of its divisors is an integer number (802000955449).

Almost surely, 2^{1604001910897} is an apocalyptic number.

It is an amenable number.

1604001910897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604001910897 is an equidigital number, since it uses as much as digits as its factorization.

1604001910897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 46.

The spelling of 1604001910897 in words is "one trillion, six hundred four billion, one million, nine hundred ten thousand, eight hundred ninety-seven".