1219561330 has 32 divisors (see below), whose sum is σ = 2392576704. Its totient is φ = 444870336.

The previous prime is 1219561319. The next prime is 1219561337. The reversal of 1219561330 is 331659121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1219561292 and 1219561301.

It is not an unprimeable number, because it can be changed into a prime (1219561337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45724 + ... + 67303.

It is an arithmetic number, because the mean of its divisors is an integer number (74768022).

Almost surely, 2^1219561330 is an apocalyptic number.

1219561330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1219561330 is a deficient number, since it is larger than the sum of its proper divisors (1173015374).

1219561330 is a wasteful number, since it uses less digits than its factorization.

1219561330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113130.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 1219561330 is about 34922.2182857848. The cubic root of 1219561330 is about 1068.4016459609.

The spelling of 1219561330 in words is "one billion, two hundred nineteen million, five hundred sixty-one thousand, three hundred thirty".