4188544161 has 4 divisors (see below), whose sum is σ = 5584725552. Its totient is φ = 2792362772.

The previous prime is 4188544159. The next prime is 4188544181. The reversal of 4188544161 is 1614458814.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4188544161 - 2¹ = 4188544159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4188544111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698090691 + ... + 698090696.

It is an arithmetic number, because the mean of its divisors is an integer number (1396181388).

Almost surely, 2^4188544161 is an apocalyptic number.

It is an amenable number.

4188544161 is a deficient number, since it is larger than the sum of its proper divisors (1396181391).

4188544161 is a wasteful number, since it uses less digits than its factorization.

4188544161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396181390.

The product of its digits is 122880, while the sum is 42.

The square root of 4188544161 is about 64718.9629165981. The cubic root of 4188544161 is about 1611.9603913336.

The spelling of 4188544161 in words is "four billion, one hundred eighty-eight million, five hundred forty-four thousand, one hundred sixty-one".