1378348776 has 48 divisors (see below), whose sum is σ = 4266319200. Its totient is φ = 393813792.

The previous prime is 1378348771. The next prime is 1378348799. The reversal of 1378348776 is 6778438731.

1378348776 is a `hidden beast` number, since 13 + 7 + 83 + 487 + 76 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1378348771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1366906 + ... + 1367913.

It is an arithmetic number, because the mean of its divisors is an integer number (88881650).

Almost surely, 2^1378348776 is an apocalyptic number.

It is an amenable number.

1378348776 is an abundant number, since it is smaller than the sum of its proper divisors (2887970424).

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

1378348776 is a wasteful number, since it uses less digits than its factorization.

1378348776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734838 (or 2734831 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The square root of 1378348776 is about 37126.1198618978. The cubic root of 1378348776 is about 1112.8920541533.

The spelling of 1378348776 in words is "one billion, three hundred seventy-eight million, three hundred forty-eight thousand, seven hundred seventy-six".