201863079828 has 120 divisors (see below), whose sum is σ = 529909978752. Its totient is φ = 67007860416.

The previous prime is 201863079811. The next prime is 201863079841. The reversal of 201863079828 is 828970368102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 96723001 + ... + 96725087.

Almost surely, 2^201863079828 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 201863079828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264954989376).

201863079828 is an abundant number, since it is smaller than the sum of its proper divisors (328046898924).

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

201863079828 is a wasteful number, since it uses less digits than its factorization.

201863079828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203 (or 3192 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 201863079828 in words is "two hundred one billion, eight hundred sixty-three million, seventy-nine thousand, eight hundred twenty-eight".