137648219 has 2 divisors, whose sum is σ = 137648220. Its totient is φ = 137648218.

The previous prime is 137648059. The next prime is 137648227. The reversal of 137648219 is 912846731.

It is a strong prime.

It is an emirp because it is prime and its reverse (912846731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137648219 - 2²⁰ = 136599643 is a prime.

It is a super-2 number, since 2×137648219² = 37894064387743922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (137648249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68824109 + 68824110.

It is an arithmetic number, because the mean of its divisors is an integer number (68824110).

Almost surely, 2^137648219 is an apocalyptic number.

137648219 is a deficient number, since it is larger than the sum of its proper divisors (1).

137648219 is an equidigital number, since it uses as much as digits as its factorization.

137648219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 137648219 is about 11732.3577766790. The cubic root of 137648219 is about 516.3254499491.

The spelling of 137648219 in words is "one hundred thirty-seven million, six hundred forty-eight thousand, two hundred nineteen".