4161660405 has 24 divisors (see below), whose sum is σ = 7745785632. Its totient is φ = 1902472992.

The previous prime is 4161660397. The next prime is 4161660407. The reversal of 4161660405 is 5040661614.

It is a happy number.

It is not a de Polignac number, because 4161660405 - 2³ = 4161660397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4161660407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2830327 + ... + 2831796.

It is an arithmetic number, because the mean of its divisors is an integer number (322741068).

Almost surely, 2^4161660405 is an apocalyptic number.

It is an amenable number.

4161660405 is a deficient number, since it is larger than the sum of its proper divisors (3584125227).

4161660405 is a wasteful number, since it uses less digits than its factorization.

4161660405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5662145 (or 5662138 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 4161660405 is about 64510.9324455941. The cubic root of 4161660405 is about 1608.5042503951.

The spelling of 4161660405 in words is "four billion, one hundred sixty-one million, six hundred sixty thousand, four hundred five".