1219048909 has 8 divisors (see below), whose sum is σ = 1313315640. Its totient is φ = 1124852736.

The previous prime is 1219048877. The next prime is 1219048933. The reversal of 1219048909 is 9098409121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 113486409 + 1105562500 = 10653^2 + 33250^2 .

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 1219048909 - 2⁵ = 1219048877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219048939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21477 + ... + 53845.

It is an arithmetic number, because the mean of its divisors is an integer number (164164455).

Almost surely, 2^1219048909 is an apocalyptic number.

It is an amenable number.

1219048909 is a deficient number, since it is larger than the sum of its proper divisors (94266731).

1219048909 is a wasteful number, since it uses less digits than its factorization.

1219048909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35279.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 1219048909 is about 34914.8809105802. The cubic root of 1219048909 is about 1068.2519888340.

The spelling of 1219048909 in words is "one billion, two hundred nineteen million, forty-eight thousand, nine hundred nine".