4161798149 has 16 divisors (see below), whose sum is σ = 4343915520. Its totient is φ = 3982406400.

The previous prime is 4161798107. The next prime is 4161798161. The reversal of 4161798149 is 9418971614.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4161798149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4161798097 and 4161798106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4161798049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1940972 + ... + 1943114.

It is an arithmetic number, because the mean of its divisors is an integer number (271494720).

Almost surely, 2^4161798149 is an apocalyptic number.

It is an amenable number.

4161798149 is a deficient number, since it is larger than the sum of its proper divisors (182117371).

4161798149 is a wasteful number, since it uses less digits than its factorization.

4161798149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740.

The product of its digits is 435456, while the sum is 50.

The square root of 4161798149 is about 64512.0000387525. Note that the first 4 decimals coincide. The cubic root of 4161798149 is about 1608.5219964663.

The spelling of 4161798149 in words is "four billion, one hundred sixty-one million, seven hundred ninety-eight thousand, one hundred forty-nine".