1224972549 has 6 divisors (see below), whose sum is σ = 1769404806. Its totient is φ = 816648360.

The previous prime is 1224972521. The next prime is 1224972563. The reversal of 1224972549 is 9452794221.

1224972549 is a `hidden beast` number, since 12 + 2 + 4 + 97 + 2 + 549 = 666.

It can be written as a sum of positive squares in only one way, i.e., 800324100 + 424648449 = 28290^2 + 20607^2 .

It is not a de Polignac number, because 1224972549 - 2¹² = 1224968453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224972509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68054022 + ... + 68054039.

It is an arithmetic number, because the mean of its divisors is an integer number (294900801).

Almost surely, 2^1224972549 is an apocalyptic number.

It is an amenable number.

1224972549 is a deficient number, since it is larger than the sum of its proper divisors (544432257).

1224972549 is a wasteful number, since it uses less digits than its factorization.

1224972549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136108067 (or 136108064 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 1224972549 is about 34999.6078406602. The cubic root of 1224972549 is about 1069.9794880628.

The spelling of 1224972549 in words is "one billion, two hundred twenty-four million, nine hundred seventy-two thousand, five hundred forty-nine".