135087919 has 2 divisors, whose sum is σ = 135087920. Its totient is φ = 135087918.

The previous prime is 135087893. The next prime is 135087961. The reversal of 135087919 is 919780531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135087919 - 2⁷ = 135087791 is a prime.

It is a super-2 number, since 2×135087919² = 36497491719501122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135087419) 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, 67543959 + 67543960.

It is an arithmetic number, because the mean of its divisors is an integer number (67543960).

Almost surely, 2^135087919 is an apocalyptic number.

135087919 is a deficient number, since it is larger than the sum of its proper divisors (1).

135087919 is an equidigital number, since it uses as much as digits as its factorization.

135087919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 135087919 is about 11622.7328541957. The cubic root of 135087919 is about 513.1041223369.

The spelling of 135087919 in words is "one hundred thirty-five million, eighty-seven thousand, nine hundred nineteen".