1395821298644 has 48 divisors (see below), whose sum is σ = 2585565729600. Its totient is φ = 657499908096.

The previous prime is 1395821298643. The next prime is 1395821298647. The reversal of 1395821298644 is 4468921285931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395821298643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41332214 + ... + 41365970.

It is an arithmetic number, because the mean of its divisors is an integer number (53865952700).

Almost surely, 2^{1395821298644} is an apocalyptic number.

It is an amenable number.

1395821298644 is a deficient number, since it is larger than the sum of its proper divisors (1189744430956).

1395821298644 is a wasteful number, since it uses less digits than its factorization.

1395821298644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36792 (or 36790 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 62.

The spelling of 1395821298644 in words is "one trillion, three hundred ninety-five billion, eight hundred twenty-one million, two hundred ninety-eight thousand, six hundred forty-four".