137444191 has 2 divisors, whose sum is σ = 137444192. Its totient is φ = 137444190.

The previous prime is 137444189. The next prime is 137444231. The reversal of 137444191 is 191444731.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137444191 - 2¹ = 137444189 is a prime.

Together with 137444189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137444101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68722095 + 68722096.

It is an arithmetic number, because the mean of its divisors is an integer number (68722096).

Almost surely, 2^137444191 is an apocalyptic number.

137444191 is a deficient number, since it is larger than the sum of its proper divisors (1).

137444191 is an equidigital number, since it uses as much as digits as its factorization.

137444191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 137444191 is about 11723.6594542830. The cubic root of 137444191 is about 516.0702173438.

The spelling of 137444191 in words is "one hundred thirty-seven million, four hundred forty-four thousand, one hundred ninety-one".