1395244809660 has 384 divisors, whose sum is σ = 4438003175424. Its totient is φ = 325188587520.

The previous prime is 1395244809643. The next prime is 1395244809661. The reversal of 1395244809660 is 669084425931.

It is a self number, because there is not a number n which added to its sum of digits gives 1395244809660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395244809661) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 245509179 + ... + 245514861.

It is an arithmetic number, because the mean of its divisors is an integer number (11557299936).

Almost surely, 2^{1395244809660} is an apocalyptic number.

1395244809660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1395244809660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2219001587712).

1395244809660 is an abundant number, since it is smaller than the sum of its proper divisors (3042758365764).

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

1395244809660 is a wasteful number, since it uses less digits than its factorization.

1395244809660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5973 (or 5971 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 57.

The spelling of 1395244809660 in words is "one trillion, three hundred ninety-five billion, two hundred forty-four million, eight hundred nine thousand, six hundred sixty".