2161692783 has 12 divisors (see below), whose sum is σ = 3306118608. Its totient is φ = 1356356160.

The previous prime is 2161692737. The next prime is 2161692809. The reversal of 2161692783 is 3872961612.

2161692783 is a `hidden beast` number, since 2 + 1 + 616 + 9 + 27 + 8 + 3 = 666.

It is not a de Polignac number, because 2161692783 - 2⁹ = 2161692271 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161692703) 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, 7064203 + ... + 7064508.

It is an arithmetic number, because the mean of its divisors is an integer number (275509884).

Almost surely, 2^2161692783 is an apocalyptic number.

2161692783 is a deficient number, since it is larger than the sum of its proper divisors (1144425825).

2161692783 is a wasteful number, since it uses less digits than its factorization.

2161692783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14128734 (or 14128731 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 2161692783 is about 46494.0080332939. The cubic root of 2161692783 is about 1292.9984101415.

The spelling of 2161692783 in words is "two billion, one hundred sixty-one million, six hundred ninety-two thousand, seven hundred eighty-three".