1220452169 has 8 divisors (see below), whose sum is σ = 1237420800. Its totient is φ = 1203537616.

The previous prime is 1220452159. The next prime is 1220452171. The reversal of 1220452169 is 9612540221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220452169 - 2²⁰ = 1219403593 is a prime.

It is a super-2 number, since 2×1220452169² = 2979006993633609122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1220452139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33032 + ... + 59430.

It is an arithmetic number, because the mean of its divisors is an integer number (154677600).

Almost surely, 2^1220452169 is an apocalyptic number.

It is an amenable number.

1220452169 is a deficient number, since it is larger than the sum of its proper divisors (16968631).

1220452169 is an equidigital number, since it uses as much as digits as its factorization.

1220452169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27039.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1220452169 is about 34934.9705739106. The cubic root of 1220452169 is about 1068.6617236847.

The spelling of 1220452169 in words is "one billion, two hundred twenty million, four hundred fifty-two thousand, one hundred sixty-nine".