2078201863 has 4 divisors (see below), whose sum is σ = 2112270808. Its totient is φ = 2044132920.

The previous prime is 2078201843. The next prime is 2078201897. The reversal of 2078201863 is 3681028702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2078201863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078201833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17034381 + ... + 17034502.

It is an arithmetic number, because the mean of its divisors is an integer number (528067702).

Almost surely, 2^2078201863 is an apocalyptic number.

2078201863 is a deficient number, since it is larger than the sum of its proper divisors (34068945).

2078201863 is an equidigital number, since it uses as much as digits as its factorization.

2078201863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34068944.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 2078201863 is about 45587.2993606772. The cubic root of 2078201863 is about 1276.1329134304.

The spelling of 2078201863 in words is "two billion, seventy-eight million, two hundred one thousand, eight hundred sixty-three".