1969873920 has 528 divisors, whose sum is σ = 8093150208. Its totient is φ = 433520640.

The previous prime is 1969873909. The next prime is 1969873921. The reversal of 1969873920 is 293789691.

It is not an unprimeable number, because it can be changed into a prime (1969873921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9999262 + ... + 9999458.

It is an arithmetic number, because the mean of its divisors is an integer number (15327936).

Almost surely, 2^1969873920 is an apocalyptic number.

1969873920 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 1969873920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4046575104).

1969873920 is an abundant number, since it is smaller than the sum of its proper divisors (6123276288).

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

1969873920 is a wasteful number, since it uses less digits than its factorization.

1969873920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 1969873920 is about 44383.2617097933. The cubic root of 1969873920 is about 1253.5629376645.

The spelling of 1969873920 in words is "one billion, nine hundred sixty-nine million, eight hundred seventy-three thousand, nine hundred twenty".