135378938 has 16 divisors (see below), whose sum is σ = 206402280. Its totient is φ = 66583296.

The previous prime is 135378889. The next prime is 135379001. The reversal of 135378938 is 839873531.

It can be written as a sum of positive squares in 4 ways, for example, as 130347889 + 5031049 = 11417^2 + 2243^2 .

It is a junction number, because it is equal to n+sod(n) for n = 135378892 and 135378901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65708 + ... + 67736.

Almost surely, 2^135378938 is an apocalyptic number.

135378938 is a deficient number, since it is larger than the sum of its proper divisors (71023342).

135378938 is a wasteful number, since it uses less digits than its factorization.

135378938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561.

The product of its digits is 544320, while the sum is 47.

The square root of 135378938 is about 11635.2455066492. The cubic root of 135378938 is about 513.4723169894.

The spelling of 135378938 in words is "one hundred thirty-five million, three hundred seventy-eight thousand, nine hundred thirty-eight".