1219885444 has 24 divisors (see below), whose sum is σ = 2159277120. Its totient is φ = 602970144.

The previous prime is 1219885427. The next prime is 1219885451. The reversal of 1219885444 is 4445889121.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1219885394 and 1219885403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269262 + ... + 273754.

It is an arithmetic number, because the mean of its divisors is an integer number (89969880).

Almost surely, 2^1219885444 is an apocalyptic number.

It is an amenable number.

1219885444 is a deficient number, since it is larger than the sum of its proper divisors (939391676).

1219885444 is a wasteful number, since it uses less digits than its factorization.

1219885444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5259 (or 5257 counting only the distinct ones).

The product of its digits is 368640, while the sum is 46.

The square root of 1219885444 is about 34926.8584902794. The cubic root of 1219885444 is about 1068.4962847054.

The spelling of 1219885444 in words is "one billion, two hundred nineteen million, eight hundred eighty-five thousand, four hundred forty-four".