2106206969 has 2 divisors, whose sum is σ = 2106206970. Its totient is φ = 2106206968.

The previous prime is 2106206923. The next prime is 2106207017. The reversal of 2106206969 is 9696026012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1830812944 + 275394025 = 42788^2 + 16595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2106206969 is a prime.

It is a super-2 number, since 2×2106206969² = 8872215592528333922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2106206369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053103484 + 1053103485.

It is an arithmetic number, because the mean of its divisors is an integer number (1053103485).

Almost surely, 2^2106206969 is an apocalyptic number.

It is an amenable number.

2106206969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106206969 is an equidigital number, since it uses as much as digits as its factorization.

2106206969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 2106206969 is about 45893.4305647333. The cubic root of 2106206969 is about 1281.8395930624.

The spelling of 2106206969 in words is "two billion, one hundred six million, two hundred six thousand, nine hundred sixty-nine".