4161947401 has 2 divisors, whose sum is σ = 4161947402. Its totient is φ = 4161947400.

The previous prime is 4161947399. The next prime is 4161947411. The reversal of 4161947401 is 1047491614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4127420025 + 34527376 = 64245^2 + 5876^2 .

It is a cyclic number.

It is not a de Polignac number, because 4161947401 - 2¹ = 4161947399 is a prime.

Together with 4161947399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4161947411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2080973700 + 2080973701.

It is an arithmetic number, because the mean of its divisors is an integer number (2080973701).

Almost surely, 2^4161947401 is an apocalyptic number.

It is an amenable number.

4161947401 is a deficient number, since it is larger than the sum of its proper divisors (1).

4161947401 is an equidigital number, since it uses as much as digits as its factorization.

4161947401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 4161947401 is about 64513.1568054145. The cubic root of 4161947401 is about 1608.5412247138.

The spelling of 4161947401 in words is "four billion, one hundred sixty-one million, nine hundred forty-seven thousand, four hundred one".