1220454049 has 2 divisors, whose sum is σ = 1220454050. Its totient is φ = 1220454048.

The previous prime is 1220454043. The next prime is 1220454061. The reversal of 1220454049 is 9404540221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1158721600 + 61732449 = 34040^2 + 7857^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220454049 - 2⁵ = 1220454017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220454049.

It is not a weakly prime, because it can be changed into another prime (1220454043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610227024 + 610227025.

It is an arithmetic number, because the mean of its divisors is an integer number (610227025).

Almost surely, 2^1220454049 is an apocalyptic number.

It is an amenable number.

1220454049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220454049 is an equidigital number, since it uses as much as digits as its factorization.

1220454049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1220454049 is about 34934.9974810361. The cubic root of 1220454049 is about 1068.6622724111.

The spelling of 1220454049 in words is "one billion, two hundred twenty million, four hundred fifty-four thousand, forty-nine".