127948181 has 2 divisors, whose sum is σ = 127948182. Its totient is φ = 127948180.

The previous prime is 127948169. The next prime is 127948187. The reversal of 127948181 is 181849721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75516100 + 52432081 = 8690^2 + 7241^2 .

It is a cyclic number.

It is not a de Polignac number, because 127948181 - 2¹⁸ = 127686037 is a prime.

It is a super-2 number, since 2×127948181² = 32741474042417522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127948187) 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, 63974090 + 63974091.

It is an arithmetic number, because the mean of its divisors is an integer number (63974091).

Almost surely, 2^127948181 is an apocalyptic number.

It is an amenable number.

127948181 is a deficient number, since it is larger than the sum of its proper divisors (1).

127948181 is an equidigital number, since it uses as much as digits as its factorization.

127948181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 41.

The square root of 127948181 is about 11311.4181692660. The cubic root of 127948181 is about 503.9004026026.

The spelling of 127948181 in words is "one hundred twenty-seven million, nine hundred forty-eight thousand, one hundred eighty-one".