135149968 has 10 divisors (see below), whose sum is σ = 261853094. Its totient is φ = 67574976.

The previous prime is 135149941. The next prime is 135149969. The reversal of 135149968 is 869941531.

It can be written as a sum of positive squares in only one way, i.e., 132434064 + 2715904 = 11508^2 + 1648^2 .

It is not an unprimeable number, because it can be changed into a prime (135149969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4223421 + ... + 4223452.

Almost surely, 2^135149968 is an apocalyptic number.

It is an amenable number.

135149968 is a deficient number, since it is larger than the sum of its proper divisors (126703126).

135149968 is an equidigital number, since it uses as much as digits as its factorization.

135149968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8446881 (or 8446875 counting only the distinct ones).

The product of its digits is 233280, while the sum is 46.

The square root of 135149968 is about 11625.4018425171. The cubic root of 135149968 is about 513.1826705017.

The spelling of 135149968 in words is "one hundred thirty-five million, one hundred forty-nine thousand, nine hundred sixty-eight".