136519 has 2 divisors, whose sum is σ = 136520. Its totient is φ = 136518.

The previous prime is 136511. The next prime is 136523. The reversal of 136519 is 915631.

It is a strong prime.

It is an emirp because it is prime and its reverse (915631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136519 - 2³ = 136511 is a prime.

It is a super-2 number, since 2×136519² = 37274874722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136493 and 136502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68259 + 68260.

It is an arithmetic number, because the mean of its divisors is an integer number (68260).

2¹³⁶⁵¹⁹ is an apocalyptic number.

136519 is a deficient number, since it is larger than the sum of its proper divisors (1).

136519 is an equidigital number, since it uses as much as digits as its factorization.

136519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 25.

The square root of 136519 is about 369.4847764117. The cubic root of 136519 is about 51.4909652043.

The spelling of 136519 in words is "one hundred thirty-six thousand, five hundred nineteen".