135019519 has 16 divisors (see below), whose sum is σ = 141188544. Its totient is φ = 129024000.

The previous prime is 135019501. The next prime is 135019523. The reversal of 135019519 is 915910531.

It is a cyclic number.

It is not a de Polignac number, because 135019519 - 2⁹ = 135019007 is a prime.

It is a super-2 number, since 2×135019519² = 36460541021982722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135019589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699487 + ... + 699679.

It is an arithmetic number, because the mean of its divisors is an integer number (8824284).

Almost surely, 2^135019519 is an apocalyptic number.

135019519 is a deficient number, since it is larger than the sum of its proper divisors (6169025).

135019519 is a wasteful number, since it uses less digits than its factorization.

135019519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498.

The product of its (nonzero) digits is 6075, while the sum is 34.

The square root of 135019519 is about 11619.7899722844. The cubic root of 135019519 is about 513.0175065304.

The spelling of 135019519 in words is "one hundred thirty-five million, nineteen thousand, five hundred nineteen".