1381936611364 has 27 divisors (see below), whose sum is σ = 2426227699441. Its totient is φ = 688735921040.

The previous prime is 1381936611337. The next prime is 1381936611373. The reversal of 1381936611364 is 4631166391831.

The square root of 1381936611364 is 1175558.

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., 326221460964 + 1055715150400 = 571158^2 + 1027480^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 914583369 + ... + 914584879.

Almost surely, 2^{1381936611364} is an apocalyptic number.

1381936611364 is the 1175558-th square number.

It is an amenable number.

1381936611364 is a deficient number, since it is larger than the sum of its proper divisors (1044291088077).

1381936611364 is an frugal number, since it uses more digits than its factorization.

1381936611364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804 (or 1902 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 52.

The spelling of 1381936611364 in words is "one trillion, three hundred eighty-one billion, nine hundred thirty-six million, six hundred eleven thousand, three hundred sixty-four".