1395866635024 has 45 divisors (see below), whose sum is σ = 2769252589173. Its totient is φ = 681603066816.

The previous prime is 1395866634947. The next prime is 1395866635043. The reversal of 1395866635024 is 4205366685931.

The square root of 1395866635024 is 1181468.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 19843793424 + 1376022841600 = 140868^2 + 1173040^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1395866635024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 203209062 + ... + 203215930.

Almost surely, 2^{1395866635024} is an apocalyptic number.

1395866635024 is the 1181468-th square number.

It is an amenable number.

1395866635024 is a deficient number, since it is larger than the sum of its proper divisors (1373385954149).

1395866635024 is an frugal number, since it uses more digits than its factorization.

1395866635024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13832 (or 6914 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 58.

The spelling of 1395866635024 in words is "one trillion, three hundred ninety-five billion, eight hundred sixty-six million, six hundred thirty-five thousand, twenty-four".