1219722481 has 8 divisors (see below), whose sum is σ = 1228451264. Its totient is φ = 1211006160.

The previous prime is 1219722479. The next prime is 1219722509. The reversal of 1219722481 is 1842279121.

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 1219722481 - 2¹ = 1219722479 is a prime.

It is a super-2 number, since 2×1219722481² = 2975445861313590722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1219722481.

It is not an unprimeable number, because it can be changed into a prime (1219722421) 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, 285346 + ... + 289588.

It is an arithmetic number, because the mean of its divisors is an integer number (153556408).

Almost surely, 2^1219722481 is an apocalyptic number.

It is an amenable number.

1219722481 is a deficient number, since it is larger than the sum of its proper divisors (8728783).

1219722481 is a wasteful number, since it uses less digits than its factorization.

1219722481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6231.

The product of its digits is 16128, while the sum is 37.

The square root of 1219722481 is about 34924.5254942712. The cubic root of 1219722481 is about 1068.4487028839.

The spelling of 1219722481 in words is "one billion, two hundred nineteen million, seven hundred twenty-two thousand, four hundred eighty-one".