1219341560644 has 27 divisors (see below), whose sum is σ = 2144095831101. Its totient is φ = 606756696240.

The previous prime is 1219341560639. The next prime is 1219341560659. The reversal of 1219341560644 is 4460651439121.

The square root of 1219341560644 is 1104238.

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., 1135635498244 + 83706062400 = 1065662^2 + 289320^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1219341560594 and 1219341560603.

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, 505739799 + ... + 505742209.

Almost surely, 2^{1219341560644} is an apocalyptic number.

1219341560644 is the 1104238-th square number.

It is an amenable number.

1219341560644 is a deficient number, since it is larger than the sum of its proper divisors (924754270457).

1219341560644 is an frugal number, since it uses more digits than its factorization.

1219341560644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5284 (or 2642 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

Adding to 1219341560644 its reverse (4460651439121), we get a palindrome (5679992999765).

The spelling of 1219341560644 in words is "one trillion, two hundred nineteen billion, three hundred forty-one million, five hundred sixty thousand, six hundred forty-four".