1244606445 has 32 divisors (see below), whose sum is σ = 2284016640. Its totient is φ = 642375360.

The previous prime is 1244606443. The next prime is 1244606453. The reversal of 1244606445 is 5446064421.

1244606445 is a `hidden beast` number, since 1 + 2 + 4 + 4 + 6 + 0 + 644 + 5 = 666.

It is not a de Polignac number, because 1244606445 - 2¹ = 1244606443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244606443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144514 + ... + 152883.

It is an arithmetic number, because the mean of its divisors is an integer number (71375520).

Almost surely, 2^1244606445 is an apocalyptic number.

1244606445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1244606445 is a deficient number, since it is larger than the sum of its proper divisors (1039410195).

1244606445 is a wasteful number, since it uses less digits than its factorization.

1244606445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297442 (or 297436 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The square root of 1244606445 is about 35278.9802148531. The cubic root of 1244606445 is about 1075.6657696704.

The spelling of 1244606445 in words is "one billion, two hundred forty-four million, six hundred six thousand, four hundred forty-five".