137169689 has 2 divisors, whose sum is σ = 137169690. Its totient is φ = 137169688.

The previous prime is 137169673. The next prime is 137169691. The reversal of 137169689 is 986961731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117072400 + 20097289 = 10820^2 + 4483^2 .

It is a cyclic number.

It is not a de Polignac number, because 137169689 - 2⁴ = 137169673 is a prime.

It is a Sophie Germain prime.

Together with 137169691, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (137169649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68584844 + 68584845.

It is an arithmetic number, because the mean of its divisors is an integer number (68584845).

Almost surely, 2^137169689 is an apocalyptic number.

It is an amenable number.

137169689 is a deficient number, since it is larger than the sum of its proper divisors (1).

137169689 is an equidigital number, since it uses as much as digits as its factorization.

137169689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 50.

The square root of 137169689 is about 11711.9464223501. The cubic root of 137169689 is about 515.7264251487.

The spelling of 137169689 in words is "one hundred thirty-seven million, one hundred sixty-nine thousand, six hundred eighty-nine".