1145184217 has 2 divisors, whose sum is σ = 1145184218. Its totient is φ = 1145184216.

The previous prime is 1145184181. The next prime is 1145184223. The reversal of 1145184217 is 7124815411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1071842121 + 73342096 = 32739^2 + 8564^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145184217 - 2²³ = 1136795609 is a prime.

It is a super-2 number, since 2×1145184217² = 2622893781731806178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1145184317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572592108 + 572592109.

It is an arithmetic number, because the mean of its divisors is an integer number (572592109).

Almost surely, 2^1145184217 is an apocalyptic number.

It is an amenable number.

1145184217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145184217 is an equidigital number, since it uses as much as digits as its factorization.

1145184217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 34.

The square root of 1145184217 is about 33840.5705773410. The cubic root of 1145184217 is about 1046.2250590260.

Adding to 1145184217 its reverse (7124815411), we get a palindrome (8269999628).

The spelling of 1145184217 in words is "one billion, one hundred forty-five million, one hundred eighty-four thousand, two hundred seventeen".