137950206349 has 2 divisors, whose sum is σ = 137950206350. Its totient is φ = 137950206348.

The previous prime is 137950206347. The next prime is 137950206353. The reversal of 137950206349 is 943602059731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137874829225 + 75377124 = 371315^2 + 8682^2 .

It is an emirp because it is prime and its reverse (943602059731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137950206349 - 2¹ = 137950206347 is a prime.

Together with 137950206347, 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 (137950206347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68975103174 + 68975103175.

It is an arithmetic number, because the mean of its divisors is an integer number (68975103175).

Almost surely, 2^137950206349 is an apocalyptic number.

It is an amenable number.

137950206349 is a deficient number, since it is larger than the sum of its proper divisors (1).

137950206349 is an equidigital number, since it uses as much as digits as its factorization.

137950206349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 137950206349 in words is "one hundred thirty-seven billion, nine hundred fifty million, two hundred six thousand, three hundred forty-nine".