1689187280111 has 4 divisors (see below), whose sum is σ = 1692851461224. Its totient is φ = 1685523099000.

The previous prime is 1689187280071. The next prime is 1689187280141. The reversal of 1689187280111 is 1110827819861.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1689187280111 - 2¹⁴ = 1689187263727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689187280141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1832089865 + ... + 1832090786.

It is an arithmetic number, because the mean of its divisors is an integer number (423212865306).

Almost surely, 2^{1689187280111} is an apocalyptic number.

1689187280111 is a deficient number, since it is larger than the sum of its proper divisors (3664181113).

1689187280111 is an equidigital number, since it uses as much as digits as its factorization.

1689187280111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664181112.

The product of its (nonzero) digits is 387072, while the sum is 53.

The spelling of 1689187280111 in words is "one trillion, six hundred eighty-nine billion, one hundred eighty-seven million, two hundred eighty thousand, one hundred eleven".