1669068811 has 2 divisors, whose sum is σ = 1669068812. Its totient is φ = 1669068810.

The previous prime is 1669068803. The next prime is 1669068833. The reversal of 1669068811 is 1188609661.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1669068811 - 2³ = 1669068803 is a prime.

It is not a weakly prime, because it can be changed into another prime (1669068311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834534405 + 834534406.

It is an arithmetic number, because the mean of its divisors is an integer number (834534406).

Almost surely, 2^1669068811 is an apocalyptic number.

1669068811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1669068811 is an equidigital number, since it uses as much as digits as its factorization.

1669068811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 1669068811 is about 40854.2385928315. The cubic root of 1669068811 is about 1186.2004394642.

The spelling of 1669068811 in words is "one billion, six hundred sixty-nine million, sixty-eight thousand, eight hundred eleven".