1378148786 has 24 divisors (see below), whose sum is σ = 2403347520. Its totient is φ = 580603896.

The previous prime is 1378148777. The next prime is 1378148797. The reversal of 1378148786 is 6878418731.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34595 + ... + 62873.

It is an arithmetic number, because the mean of its divisors is an integer number (100139480).

Almost surely, 2^1378148786 is an apocalyptic number.

1378148786 is a deficient number, since it is larger than the sum of its proper divisors (1025198734).

1378148786 is an equidigital number, since it uses as much as digits as its factorization.

1378148786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28406 (or 28347 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 53.

The square root of 1378148786 is about 37123.4263774237. The cubic root of 1378148786 is about 1112.8382269336.

The spelling of 1378148786 in words is "one billion, three hundred seventy-eight million, one hundred forty-eight thousand, seven hundred eighty-six".