1619780399163 has 12 divisors (see below), whose sum is σ = 2340134629560. Its totient is φ = 1079645062176.

The previous prime is 1619780399087. The next prime is 1619780399219. The reversal of 1619780399163 is 3619930879161.

1619780399163 is a `hidden beast` number, since 1 + 6 + 1 + 9 + 7 + 80 + 399 + 163 = 666.

It is not a de Polignac number, because 1619780399163 - 2²⁰ = 1619779350587 is a prime.

It is a super-2 number, since 2×1619780399163² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1619780399163.

It is not an unprimeable number, because it can be changed into a prime (1619780399663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17328906 + ... + 17422127.

It is an arithmetic number, because the mean of its divisors is an integer number (195011219130).

Almost surely, 2^{1619780399163} is an apocalyptic number.

1619780399163 is a deficient number, since it is larger than the sum of its proper divisors (720354230397).

1619780399163 is a wasteful number, since it uses less digits than its factorization.

1619780399163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34756218 (or 34756215 counting only the distinct ones).

The product of its (nonzero) digits is 13226976, while the sum is 63.

The spelling of 1619780399163 in words is "one trillion, six hundred nineteen billion, seven hundred eighty million, three hundred ninety-nine thousand, one hundred sixty-three".