1378766668 has 12 divisors (see below), whose sum is σ = 2478053872. Its totient is φ = 670751280.

The previous prime is 1378766659. The next prime is 1378766687. The reversal of 1378766668 is 8666678731.

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, 4657848 + ... + 4658143.

Almost surely, 2^1378766668 is an apocalyptic number.

It is an amenable number.

1378766668 is a deficient number, since it is larger than the sum of its proper divisors (1099287204).

1378766668 is a wasteful number, since it uses less digits than its factorization.

1378766668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9316032 (or 9316030 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 58.

The square root of 1378766668 is about 37131.7474407009. The cubic root of 1378766668 is about 1113.0045127951.

The spelling of 1378766668 in words is "one billion, three hundred seventy-eight million, seven hundred sixty-six thousand, six hundred sixty-eight".