1220453354 has 4 divisors (see below), whose sum is σ = 1830680034. Its totient is φ = 610226676.

The previous prime is 1220453323. The next prime is 1220453359. The reversal of 1220453354 is 4533540221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1212641329 + 7812025 = 34823^2 + 2795^2 .

It is not an unprimeable number, because it can be changed into a prime (1220453359) 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 as a sum of consecutive naturals, namely, 305113337 + ... + 305113340.

Almost surely, 2^1220453354 is an apocalyptic number.

1220453354 is a deficient number, since it is larger than the sum of its proper divisors (610226680).

1220453354 is an equidigital number, since it uses as much as digits as its factorization.

1220453354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610226679.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 1220453354 is about 34934.9875339895. The cubic root of 1220453354 is about 1068.6620695575.

Adding to 1220453354 its reverse (4533540221), we get a palindrome (5753993575).

The spelling of 1220453354 in words is "one billion, two hundred twenty million, four hundred fifty-three thousand, three hundred fifty-four".