4199556541 has 2 divisors, whose sum is σ = 4199556542. Its totient is φ = 4199556540.

The previous prime is 4199556539. The next prime is 4199556553. The reversal of 4199556541 is 1456559914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3987417316 + 212139225 = 63146^2 + 14565^2 .

It is a cyclic number.

It is not a de Polignac number, because 4199556541 - 2¹ = 4199556539 is a prime.

Together with 4199556539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4199556341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2099778270 + 2099778271.

It is an arithmetic number, because the mean of its divisors is an integer number (2099778271).

Almost surely, 2^4199556541 is an apocalyptic number.

It is an amenable number.

4199556541 is a deficient number, since it is larger than the sum of its proper divisors (1).

4199556541 is an equidigital number, since it uses as much as digits as its factorization.

4199556541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972000, while the sum is 49.

The square root of 4199556541 is about 64803.9855332988. The cubic root of 4199556541 is about 1613.3718591486.

The spelling of 4199556541 in words is "four billion, one hundred ninety-nine million, five hundred fifty-six thousand, five hundred forty-one".