1979223120 has 320 divisors, whose sum is σ = 7839498240. Its totient is φ = 449597952.

The previous prime is 1979223109. The next prime is 1979223131. The reversal of 1979223120 is 213229791.

It is an interprime number because it is at equal distance from previous prime (1979223109) and next prime (1979223131).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3371467 + ... + 3372053.

It is an arithmetic number, because the mean of its divisors is an integer number (24498432).

Almost surely, 2^1979223120 is an apocalyptic number.

1979223120 is a gapful number since it is divisible by the number (10) 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 1979223120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3919749120).

1979223120 is an abundant number, since it is smaller than the sum of its proper divisors (5860275120).

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

1979223120 is a wasteful number, since it uses less digits than its factorization.

1979223120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 827 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1979223120 is about 44488.4605262983. The cubic root of 1979223120 is about 1255.5429828740.

The spelling of 1979223120 in words is "one billion, nine hundred seventy-nine million, two hundred twenty-three thousand, one hundred twenty".