1395386768 has 20 divisors (see below), whose sum is σ = 2715374940. Its totient is φ = 694644864.

The previous prime is 1395386753. The next prime is 1395386777. The reversal of 1395386768 is 8676835931.

It can be written as a sum of positive squares in 2 ways, for example, as 777963664 + 617423104 = 27892^2 + 24848^2 .

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, 186755 + ... + 194082.

It is an arithmetic number, because the mean of its divisors is an integer number (135768747).

Almost surely, 2^1395386768 is an apocalyptic number.

It is an amenable number.

1395386768 is a deficient number, since it is larger than the sum of its proper divisors (1319988172).

1395386768 is a wasteful number, since it uses less digits than its factorization.

1395386768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381074 (or 381068 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The square root of 1395386768 is about 37354.8760940255. The cubic root of 1395386768 is about 1117.4588348056.

The spelling of 1395386768 in words is "one billion, three hundred ninety-five million, three hundred eighty-six thousand, seven hundred sixty-eight".