4181562149 has 2 divisors, whose sum is σ = 4181562150. Its totient is φ = 4181562148.

The previous prime is 4181562107. The next prime is 4181562167. The reversal of 4181562149 is 9412651814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4175485924 + 6076225 = 64618^2 + 2465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4181562149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4181562349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2090781074 + 2090781075.

It is an arithmetic number, because the mean of its divisors is an integer number (2090781075).

Almost surely, 2^4181562149 is an apocalyptic number.

It is an amenable number.

4181562149 is a deficient number, since it is larger than the sum of its proper divisors (1).

4181562149 is an equidigital number, since it uses as much as digits as its factorization.

4181562149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 41.

The square root of 4181562149 is about 64664.9994123560. Note that the first 3 decimals coincide. The cubic root of 4181562149 is about 1611.0642178840.

The spelling of 4181562149 in words is "four billion, one hundred eighty-one million, five hundred sixty-two thousand, one hundred forty-nine".