2163694069 has 2 divisors, whose sum is σ = 2163694070. Its totient is φ = 2163694068.

The previous prime is 2163694063. The next prime is 2163694109. The reversal of 2163694069 is 9604963612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1302271569 + 861422500 = 36087^2 + 29350^2 .

It is a cyclic number.

It is not a de Polignac number, because 2163694069 - 2⁹ = 2163693557 is a prime.

It is a super-2 number, since 2×2163694069² = 9363144048451553522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2163694063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081847034 + 1081847035.

It is an arithmetic number, because the mean of its divisors is an integer number (1081847035).

Almost surely, 2^2163694069 is an apocalyptic number.

It is an amenable number.

2163694069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163694069 is an equidigital number, since it uses as much as digits as its factorization.

2163694069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 2163694069 is about 46515.5250319719. The cubic root of 2163694069 is about 1293.3973045480.

The spelling of 2163694069 in words is "two billion, one hundred sixty-three million, six hundred ninety-four thousand, sixty-nine".