1969790976 has 84 divisors (see below), whose sum is σ = 5690372922. Its totient is φ = 656572416.

The previous prime is 1969790959. The next prime is 1969791007. The reversal of 1969790976 is 6790979691.

It can be written as a sum of positive squares in only one way, i.e., 1866240000 + 103550976 = 43200^2 + 10176^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60370 + ... + 87086.

Almost surely, 2^1969790976 is an apocalyptic number.

1969790976 is a gapful number since it is divisible by the number (16) 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 1969790976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2845186461).

1969790976 is an abundant number, since it is smaller than the sum of its proper divisors (3720581946).

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

1969790976 is an equidigital number, since it uses as much as digits as its factorization.

1969790976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26749 (or 26722 counting only the distinct ones).

The product of its (nonzero) digits is 11573604, while the sum is 63.

The square root of 1969790976 is about 44382.3272936425. The cubic root of 1969790976 is about 1253.5453431402.

The spelling of 1969790976 in words is "one billion, nine hundred sixty-nine million, seven hundred ninety thousand, nine hundred seventy-six".