1219681448 has 32 divisors (see below), whose sum is σ = 2345112000. Its totient is φ = 594349440.

The previous prime is 1219681429. The next prime is 1219681469. The reversal of 1219681448 is 8441869121.

It is a junction number, because it is equal to n+sod(n) for n = 1219681399 and 1219681408.

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, 615323 + ... + 617301.

It is an arithmetic number, because the mean of its divisors is an integer number (73284750).

Almost surely, 2^1219681448 is an apocalyptic number.

It is an amenable number.

1219681448 is a deficient number, since it is larger than the sum of its proper divisors (1125430552).

1219681448 is a wasteful number, since it uses less digits than its factorization.

1219681448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3905 (or 3901 counting only the distinct ones).

The product of its digits is 110592, while the sum is 44.

The square root of 1219681448 is about 34923.9380368251. The cubic root of 1219681448 is about 1068.4367214296.

The spelling of 1219681448 in words is "one billion, two hundred nineteen million, six hundred eighty-one thousand, four hundred forty-eight".