63364181 has 2 divisors, whose sum is σ = 63364182. Its totient is φ = 63364180.

The previous prime is 63364157. The next prime is 63364199. The reversal of 63364181 is 18146336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46799281 + 16564900 = 6841^2 + 4070^2 .

It is a cyclic number.

It is not a de Polignac number, because 63364181 - 2¹⁸ = 63102037 is a prime.

It is a super-2 number, since 2×63364181² = 8030038867601522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63364381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31682090 + 31682091.

It is an arithmetic number, because the mean of its divisors is an integer number (31682091).

Almost surely, 2^63364181 is an apocalyptic number.

It is an amenable number.

63364181 is a deficient number, since it is larger than the sum of its proper divisors (1).

63364181 is an equidigital number, since it uses as much as digits as its factorization.

63364181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 63364181 is about 7960.1621214646. The cubic root of 63364181 is about 398.6709661465.

The spelling of 63364181 in words is "sixty-three million, three hundred sixty-four thousand, one hundred eighty-one".