1220453149 has 2 divisors, whose sum is σ = 1220453150. Its totient is φ = 1220453148.

The previous prime is 1220453131. The next prime is 1220453233. The reversal of 1220453149 is 9413540221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 880308900 + 340144249 = 29670^2 + 18443^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220453149 - 2¹¹ = 1220451101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220453149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220454149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610226574 + 610226575.

It is an arithmetic number, because the mean of its divisors is an integer number (610226575).

Almost surely, 2^1220453149 is an apocalyptic number.

It is an amenable number.

1220453149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220453149 is an equidigital number, since it uses as much as digits as its factorization.

1220453149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1220453149 is about 34934.9845999680. The cubic root of 1220453149 is about 1068.6620097230.

The spelling of 1220453149 in words is "one billion, two hundred twenty million, four hundred fifty-three thousand, one hundred forty-nine".