1689411611 has 2 divisors, whose sum is σ = 1689411612. Its totient is φ = 1689411610.

The previous prime is 1689411599. The next prime is 1689411613. The reversal of 1689411611 is 1161149861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1689411611 - 2²² = 1685217307 is a prime.

It is a super-2 number, since 2×1689411611² = 5708223182763230642, which contains 22 as substring.

Together with 1689411613, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1689411613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 844705805 + 844705806.

It is an arithmetic number, because the mean of its divisors is an integer number (844705806).

Almost surely, 2^1689411611 is an apocalyptic number.

1689411611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1689411611 is an equidigital number, since it uses as much as digits as its factorization.

1689411611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 38.

The square root of 1689411611 is about 41102.4526153854. The cubic root of 1689411611 is about 1191.0001738949. Note that the first 3 decimals are identical.

The spelling of 1689411611 in words is "one billion, six hundred eighty-nine million, four hundred eleven thousand, six hundred eleven".