135919488 has 128 divisors (see below), whose sum is σ = 391288320. Its totient is φ = 41639936.

The previous prime is 135919411. The next prime is 135919493. The reversal of 135919488 is 884919531.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306595 + ... + 307037.

It is an arithmetic number, because the mean of its divisors is an integer number (3056940).

Almost surely, 2^135919488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135919488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195644160).

135919488 is an abundant number, since it is smaller than the sum of its proper divisors (255368832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135919488 is a wasteful number, since it uses less digits than its factorization.

135919488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 512 counting only the distinct ones).

The product of its digits is 311040, while the sum is 48.

The square root of 135919488 is about 11658.4513551329. The cubic root of 135919488 is about 514.1548181862.

The spelling of 135919488 in words is "one hundred thirty-five million, nine hundred nineteen thousand, four hundred eighty-eight".