1219852089 has 16 divisors (see below), whose sum is σ = 1808611200. Its totient is φ = 812594448.

The previous prime is 1219852057. The next prime is 1219852091. The reversal of 1219852089 is 9802589121.

It is not a de Polignac number, because 1219852089 - 2⁵ = 1219852057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1219852189) 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 15 ways as a sum of consecutive naturals, for example, 18487 + ... + 52739.

It is an arithmetic number, because the mean of its divisors is an integer number (113038200).

Almost surely, 2^1219852089 is an apocalyptic number.

It is an amenable number.

1219852089 is a deficient number, since it is larger than the sum of its proper divisors (588759111).

1219852089 is a wasteful number, since it uses less digits than its factorization.

1219852089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35581 (or 35575 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 1219852089 is about 34926.3809891606. The cubic root of 1219852089 is about 1068.4865460810.

The spelling of 1219852089 in words is "one billion, two hundred nineteen million, eight hundred fifty-two thousand, eighty-nine".