1378531108 has 12 divisors (see below), whose sum is σ = 2424553600. Its totient is φ = 685801512.

The previous prime is 1378531087. The next prime is 1378531159. The reversal of 1378531108 is 8011358731.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865116 + ... + 866707.

Almost surely, 2^1378531108 is an apocalyptic number.

It is an amenable number.

1378531108 is a deficient number, since it is larger than the sum of its proper divisors (1046022492).

1378531108 is a wasteful number, since it uses less digits than its factorization.

1378531108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732026 (or 1732024 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 1378531108 is about 37128.5753564556. The cubic root of 1378531108 is about 1112.9411241929.

Adding to 1378531108 its reverse (8011358731), we get a palindrome (9389889839).

The spelling of 1378531108 in words is "one billion, three hundred seventy-eight million, five hundred thirty-one thousand, one hundred eight".