1331619065764 has 27 divisors (see below), whose sum is σ = 2523435588513. Its totient is φ = 614579567472.

The previous prime is 1331619065729. The next prime is 1331619065767. The reversal of 1331619065764 is 4675609161331.

The square root of 1331619065764 is 1153958.

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., 196985068900 + 1134633996864 = 443830^2 + 1065192^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331619065767) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 29980717 + ... + 30025099.

Almost surely, 2^{1331619065764} is an apocalyptic number.

1331619065764 is the 1153958-th square number.

It is an amenable number.

1331619065764 is a deficient number, since it is larger than the sum of its proper divisors (1191816522749).

1331619065764 is an frugal number, since it uses more digits than its factorization.

1331619065764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88796 (or 44398 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 1331619065764 in words is "one trillion, three hundred thirty-one billion, six hundred nineteen million, sixty-five thousand, seven hundred sixty-four".