137948539 has 2 divisors, whose sum is σ = 137948540. Its totient is φ = 137948538.

The previous prime is 137948537. The next prime is 137948561. The reversal of 137948539 is 935849731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137948539 - 2¹ = 137948537 is a prime.

Together with 137948537, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 137948492 and 137948501.

It is not a weakly prime, because it can be changed into another prime (137948537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68974269 + 68974270.

It is an arithmetic number, because the mean of its divisors is an integer number (68974270).

Almost surely, 2^137948539 is an apocalyptic number.

137948539 is a deficient number, since it is larger than the sum of its proper divisors (1).

137948539 is an equidigital number, since it uses as much as digits as its factorization.

137948539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 137948539 is about 11745.1495946199. The cubic root of 137948539 is about 516.7006823714.

It can be divided in two parts, 137 and 948539, that added together give a square (948676 = 974²).

The spelling of 137948539 in words is "one hundred thirty-seven million, nine hundred forty-eight thousand, five hundred thirty-nine".