1378708216 has 8 divisors (see below), whose sum is σ = 2585077920. Its totient is φ = 689354104.

The previous prime is 1378708207. The next prime is 1378708231. The reversal of 1378708216 is 6128078731.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86169256 + ... + 86169271.

It is an arithmetic number, because the mean of its divisors is an integer number (323134740).

Almost surely, 2^1378708216 is an apocalyptic number.

It is an amenable number.

1378708216 is a deficient number, since it is larger than the sum of its proper divisors (1206369704).

1378708216 is a wasteful number, since it uses less digits than its factorization.

1378708216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172338533 (or 172338529 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 1378708216 is about 37130.9603430884. The cubic root of 1378708216 is about 1112.9887841828.

The spelling of 1378708216 in words is "one billion, three hundred seventy-eight million, seven hundred eight thousand, two hundred sixteen".