2085729878 has 8 divisors (see below), whose sum is σ = 3201352968. Its totient is φ = 1018612224.

The previous prime is 2085729871. The next prime is 2085729911. The reversal of 2085729878 is 8789275802.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2085729871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12126251 + ... + 12126422.

It is an arithmetic number, because the mean of its divisors is an integer number (400169121).

Almost surely, 2^2085729878 is an apocalyptic number.

2085729878 is a deficient number, since it is larger than the sum of its proper divisors (1115623090).

2085729878 is a wasteful number, since it uses less digits than its factorization.

2085729878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24252718.

The product of its (nonzero) digits is 4515840, while the sum is 56.

The square root of 2085729878 is about 45669.7917446533. The cubic root of 2085729878 is about 1277.6719315984.

The spelling of 2085729878 in words is "two billion, eighty-five million, seven hundred twenty-nine thousand, eight hundred seventy-eight".