1220767449 has 16 divisors (see below), whose sum is σ = 1780766400. Its totient is φ = 737732160.

The previous prime is 1220767447. The next prime is 1220767451. The reversal of 1220767449 is 9447670221.

1220767449 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1220767447) and next prime (1220767451).

It is not a de Polignac number, because 1220767449 - 2¹ = 1220767447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220767449.

It is not an unprimeable number, because it can be changed into a prime (1220767447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41482 + ... + 64515.

It is an arithmetic number, because the mean of its divisors is an integer number (111297900).

Almost surely, 2^1220767449 is an apocalyptic number.

It is an amenable number.

1220767449 is a deficient number, since it is larger than the sum of its proper divisors (559998951).

1220767449 is a wasteful number, since it uses less digits than its factorization.

1220767449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106360.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 1220767449 is about 34939.4826664620. The cubic root of 1220767449 is about 1068.7537383953.

The spelling of 1220767449 in words is "one billion, two hundred twenty million, seven hundred sixty-seven thousand, four hundred forty-nine".