1969845920 has 96 divisors (see below), whose sum is σ = 5330054016. Its totient is φ = 673920000.

The previous prime is 1969845907. The next prime is 1969845959. The reversal of 1969845920 is 295489691.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604295 + ... + 607545.

It is an arithmetic number, because the mean of its divisors is an integer number (55521396).

Almost surely, 2^1969845920 is an apocalyptic number.

1969845920 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 1969845920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2665027008).

1969845920 is an abundant number, since it is smaller than the sum of its proper divisors (3360208096).

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

1969845920 is a wasteful number, since it uses less digits than its factorization.

1969845920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3814 (or 3806 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 53.

The square root of 1969845920 is about 44382.9462744419. The cubic root of 1969845920 is about 1253.5569982101.

The spelling of 1969845920 in words is "one billion, nine hundred sixty-nine million, eight hundred forty-five thousand, nine hundred twenty".