1979222784 has 144 divisors (see below), whose sum is σ = 6567617280. Its totient is φ = 514068480.

The previous prime is 1979222783. The next prime is 1979222789. The reversal of 1979222784 is 4872229791.

It is not an unprimeable number, because it can be changed into a prime (1979222783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42402 + ... + 75870.

Almost surely, 2^1979222784 is an apocalyptic number.

1979222784 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1979222784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3283808640).

1979222784 is an abundant number, since it is smaller than the sum of its proper divisors (4588394496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1979222784 is a wasteful number, since it uses less digits than its factorization.

1979222784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33506 (or 33492 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The square root of 1979222784 is about 44488.4567500380. The cubic root of 1979222784 is about 1255.5429118255.

The spelling of 1979222784 in words is "one billion, nine hundred seventy-nine million, two hundred twenty-two thousand, seven hundred eighty-four".