1378404268 has 24 divisors (see below), whose sum is σ = 2555258832. Its totient is φ = 648367104.

The previous prime is 1378404257. The next prime is 1378404271. The reversal of 1378404268 is 8624048731.

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, 248655 + ... + 254137.

It is an arithmetic number, because the mean of its divisors is an integer number (106469118).

Almost surely, 2^1378404268 is an apocalyptic number.

It is an amenable number.

1378404268 is a deficient number, since it is larger than the sum of its proper divisors (1176854564).

1378404268 is a wasteful number, since it uses less digits than its factorization.

1378404268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9201 (or 9199 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 1378404268 is about 37126.8671988359. The cubic root of 1378404268 is about 1112.9069888776.

The spelling of 1378404268 in words is "one billion, three hundred seventy-eight million, four hundred four thousand, two hundred sixty-eight".