135381948 has 96 divisors (see below), whose sum is σ = 365783040. Its totient is φ = 38599680.

The previous prime is 135381943. The next prime is 135381971. The reversal of 135381948 is 849183531.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135381941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187933 + ... + 188651.

It is an arithmetic number, because the mean of its divisors is an integer number (3810240).

Almost surely, 2^135381948 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 135381948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182891520).

135381948 is an abundant number, since it is smaller than the sum of its proper divisors (230401092).

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

135381948 is a wasteful number, since it uses less digits than its factorization.

135381948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 825 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 135381948 is about 11635.3748542967. The cubic root of 135381948 is about 513.4761224564.

The spelling of 135381948 in words is "one hundred thirty-five million, three hundred eighty-one thousand, nine hundred forty-eight".