135189178 has 16 divisors (see below), whose sum is σ = 207036000. Its totient is φ = 66186352.

The previous prime is 135189149. The next prime is 135189209. The reversal of 135189178 is 871981531.

It is a super-2 number, since 2×135189178² = 36552227696631368, which contains 22 as substring.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 29613 + ... + 33871.

It is an arithmetic number, because the mean of its divisors is an integer number (12939750).

Almost surely, 2^135189178 is an apocalyptic number.

135189178 is a deficient number, since it is larger than the sum of its proper divisors (71846822).

135189178 is a wasteful number, since it uses less digits than its factorization.

135189178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4589.

The product of its digits is 60480, while the sum is 43.

The square root of 135189178 is about 11627.0881135390. The cubic root of 135189178 is about 513.2322942571.

The spelling of 135189178 in words is "one hundred thirty-five million, one hundred eighty-nine thousand, one hundred seventy-eight".