1604911133669 has 2 divisors, whose sum is σ = 1604911133670. Its totient is φ = 1604911133668.

The previous prime is 1604911133653. The next prime is 1604911133759. The reversal of 1604911133669 is 9663311194061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1604908922500 + 2211169 = 1266850^2 + 1487^2 .

It is a cyclic number.

It is not a de Polignac number, because 1604911133669 - 2⁴ = 1604911133653 is a prime.

It is a super-2 number, since 2×1604911133669² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1604911136669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802455566834 + 802455566835.

It is an arithmetic number, because the mean of its divisors is an integer number (802455566835).

Almost surely, 2^{1604911133669} is an apocalyptic number.

It is an amenable number.

1604911133669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604911133669 is an equidigital number, since it uses as much as digits as its factorization.

1604911133669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 50.

The spelling of 1604911133669 in words is "one trillion, six hundred four billion, nine hundred eleven million, one hundred thirty-three thousand, six hundred sixty-nine".