1799779896 has 192 divisors, whose sum is σ = 5211648000. Its totient is φ = 560252160.

The previous prime is 1799779889. The next prime is 1799779901. The reversal of 1799779896 is 6989779971.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10403266 + ... + 10403438.

It is an arithmetic number, because the mean of its divisors is an integer number (27144000).

Almost surely, 2^1799779896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1799779896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2605824000).

1799779896 is an abundant number, since it is smaller than the sum of its proper divisors (3411868104).

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

1799779896 is a wasteful number, since it uses less digits than its factorization.

1799779896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 347 counting only the distinct ones).

The product of its digits is 108020304, while the sum is 72.

The square root of 1799779896 is about 42423.8128413748. The cubic root of 1799779896 is about 1216.3908149829.

The spelling of 1799779896 in words is "one billion, seven hundred ninety-nine million, seven hundred seventy-nine thousand, eight hundred ninety-six".