1896645605 has 16 divisors (see below), whose sum is σ = 2310881664. Its totient is φ = 1494210240.

The previous prime is 1896645599. The next prime is 1896645623. The reversal of 1896645605 is 5065466981.

It is a happy number.

It is not a de Polignac number, because 1896645605 - 2⁴ = 1896645589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83042 + ... + 103388.

It is an arithmetic number, because the mean of its divisors is an integer number (144430104).

Almost surely, 2^1896645605 is an apocalyptic number.

It is an amenable number.

1896645605 is a deficient number, since it is larger than the sum of its proper divisors (414236059).

1896645605 is a wasteful number, since it uses less digits than its factorization.

1896645605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20636.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The square root of 1896645605 is about 43550.4948881181. The cubic root of 1896645605 is about 1237.8330182890.

The spelling of 1896645605 in words is "one billion, eight hundred ninety-six million, six hundred forty-five thousand, six hundred five".