2161674685 has 8 divisors (see below), whose sum is σ = 2595661920. Its totient is φ = 1728238224.

The previous prime is 2161674677. The next prime is 2161674689. The reversal of 2161674685 is 5864761612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2161674685 - 2³ = 2161674677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161674689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129007 + ... + 144796.

It is an arithmetic number, because the mean of its divisors is an integer number (324457740).

Almost surely, 2^2161674685 is an apocalyptic number.

It is an amenable number.

2161674685 is a deficient number, since it is larger than the sum of its proper divisors (433987235).

2161674685 is a wasteful number, since it uses less digits than its factorization.

2161674685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275387.

The product of its digits is 483840, while the sum is 46.

The square root of 2161674685 is about 46493.8134056565. The cubic root of 2161674685 is about 1292.9948017425.

The spelling of 2161674685 in words is "two billion, one hundred sixty-one million, six hundred seventy-four thousand, six hundred eighty-five".