137749543 has 2 divisors, whose sum is σ = 137749544. Its totient is φ = 137749542.

The previous prime is 137749541. The next prime is 137749567. The reversal of 137749543 is 345947731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137749543 - 2¹ = 137749541 is a prime.

Together with 137749541, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 137749543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137749541) 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, 68874771 + 68874772.

It is an arithmetic number, because the mean of its divisors is an integer number (68874772).

Almost surely, 2^137749543 is an apocalyptic number.

137749543 is a deficient number, since it is larger than the sum of its proper divisors (1).

137749543 is an equidigital number, since it uses as much as digits as its factorization.

137749543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 43.

The square root of 137749543 is about 11736.6751254348. The cubic root of 137749543 is about 516.4521093633.

The spelling of 137749543 in words is "one hundred thirty-seven million, seven hundred forty-nine thousand, five hundred forty-three".