1395219265636 has 135 divisors (see below), whose sum is σ = 3030086112459. Its totient is φ = 561983756544.

The previous prime is 1395219265631. The next prime is 1395219265663. The reversal of 1395219265636 is 6365629125931.

The square root of 1395219265636 is 1181194.

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

It can be written as a sum of positive squares in 4 ways, for example, as 18689624100 + 1376529641536 = 136710^2 + 1173256^2 .

It is not an unprimeable number, because it can be changed into a prime (1395219265631) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1967868850 + ... + 1967869558.

Almost surely, 2^{1395219265636} is an apocalyptic number.

1395219265636 is the 1181194-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1395219265636

1395219265636 is an abundant number, since it is smaller than the sum of its proper divisors (1634866846823).

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

1395219265636 is an frugal number, since it uses more digits than its factorization.

1395219265636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484 (or 735 counting only the distinct ones).

The product of its digits is 15746400, while the sum is 58.

The spelling of 1395219265636 in words is "one trillion, three hundred ninety-five billion, two hundred nineteen million, two hundred sixty-five thousand, six hundred thirty-six".