1919106597745 has 32 divisors (see below), whose sum is σ = 2371455360000. Its totient is φ = 1489823870976.

The previous prime is 1919106597719. The next prime is 1919106597781. The reversal of 1919106597745 is 5477956019191.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1919106597745 - 2¹¹ = 1919106595697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309580156 + ... + 309586354.

It is an arithmetic number, because the mean of its divisors is an integer number (74107980000).

Almost surely, 2^{1919106597745} is an apocalyptic number.

It is an amenable number.

1919106597745 is a deficient number, since it is larger than the sum of its proper divisors (452348762255).

1919106597745 is a wasteful number, since it uses less digits than its factorization.

1919106597745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10417.

The product of its (nonzero) digits is 21432600, while the sum is 64.

The spelling of 1919106597745 in words is "one trillion, nine hundred nineteen billion, one hundred six million, five hundred ninety-seven thousand, seven hundred forty-five".