1378915134 has 16 divisors (see below), whose sum is σ = 2772121872. Its totient is φ = 457256448.

The previous prime is 1378915133. The next prime is 1378915147. The reversal of 1378915134 is 4315198731.

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 7 ways as a sum of consecutive naturals, for example, 594229 + ... + 596544.

It is an arithmetic number, because the mean of its divisors is an integer number (173257617).

Almost surely, 2^1378915134 is an apocalyptic number.

1378915134 is an abundant number, since it is smaller than the sum of its proper divisors (1393206738).

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

1378915134 is a wasteful number, since it uses less digits than its factorization.

1378915134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190971.

The product of its digits is 90720, while the sum is 42.

The square root of 1378915134 is about 37133.7465656241. The cubic root of 1378915134 is about 1113.0444609123.

The spelling of 1378915134 in words is "one billion, three hundred seventy-eight million, nine hundred fifteen thousand, one hundred thirty-four".