1200228749 has 2 divisors, whose sum is σ = 1200228750. Its totient is φ = 1200228748.

The previous prime is 1200228661. The next prime is 1200228779. The reversal of 1200228749 is 9478220021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 680844649 + 519384100 = 26093^2 + 22790^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200228749 - 2⁸ = 1200228493 is a prime.

It is a super-2 number, since 2×1200228749² = 2881098099852210002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200228779) 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, 600114374 + 600114375.

It is an arithmetic number, because the mean of its divisors is an integer number (600114375).

Almost surely, 2^1200228749 is an apocalyptic number.

It is an amenable number.

1200228749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200228749 is an equidigital number, since it uses as much as digits as its factorization.

1200228749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 1200228749 is about 34644.3177014644. The cubic root of 1200228749 is about 1062.7260876940.

The spelling of 1200228749 in words is "one billion, two hundred million, two hundred twenty-eight thousand, seven hundred forty-nine".