1219963145 has 8 divisors (see below), whose sum is σ = 1464751104. Its totient is φ = 975440304.

The previous prime is 1219963141. The next prime is 1219963177. The reversal of 1219963145 is 5413699121.

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 1219963145 - 2² = 1219963141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1219963141) 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 7 ways as a sum of consecutive naturals, for example, 56009 + ... + 74678.

It is an arithmetic number, because the mean of its divisors is an integer number (183093888).

Almost surely, 2^1219963145 is an apocalyptic number.

It is an amenable number.

1219963145 is a deficient number, since it is larger than the sum of its proper divisors (244787959).

1219963145 is a wasteful number, since it uses less digits than its factorization.

1219963145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132559.

The product of its digits is 58320, while the sum is 41.

The square root of 1219963145 is about 34927.9708113712. The cubic root of 1219963145 is about 1068.5189702965.

The spelling of 1219963145 in words is "one billion, two hundred nineteen million, nine hundred sixty-three thousand, one hundred forty-five".