1378915135 has 32 divisors (see below), whose sum is σ = 1893689280. Its totient is φ = 954882048.

The previous prime is 1378915133. The next prime is 1378915147. The reversal of 1378915135 is 5315198731.

It is a cyclic number.

It is not a de Polignac number, because 1378915135 - 2¹ = 1378915133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1378915091 and 1378915100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378915133) 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, 321636 + ... + 325894.

It is an arithmetic number, because the mean of its divisors is an integer number (59177790).

Almost surely, 2^1378915135 is an apocalyptic number.

1378915135 is a deficient number, since it is larger than the sum of its proper divisors (514774145).

1378915135 is a wasteful number, since it uses less digits than its factorization.

1378915135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4587.

The product of its digits is 113400, while the sum is 43.

The square root of 1378915135 is about 37133.7465790889. The cubic root of 1378915135 is about 1113.0444611813.

The spelling of 1378915135 in words is "one billion, three hundred seventy-eight million, nine hundred fifteen thousand, one hundred thirty-five".