1145232229 has 2 divisors, whose sum is σ = 1145232230. Its totient is φ = 1145232228.

The previous prime is 1145232223. The next prime is 1145232271. The reversal of 1145232229 is 9222325411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1093823329 + 51408900 = 33073^2 + 7170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145232229 - 2⁵ = 1145232197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1145232229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145232223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572616114 + 572616115.

It is an arithmetic number, because the mean of its divisors is an integer number (572616115).

Almost surely, 2^1145232229 is an apocalyptic number.

It is an amenable number.

1145232229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145232229 is an equidigital number, since it uses as much as digits as its factorization.

1145232229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 1145232229 is about 33841.2799551081. The cubic root of 1145232229 is about 1046.2396798631.

It can be divided in two parts, 11452 and 32229, that added together give a square (43681 = 209²).

The spelling of 1145232229 in words is "one billion, one hundred forty-five million, two hundred thirty-two thousand, two hundred twenty-nine".