2529978858 has 96 divisors (see below), whose sum is σ = 6333949440. Its totient is φ = 721781280.

The previous prime is 2529978853. The next prime is 2529978883. The reversal of 2529978858 is 8588799252.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2529978795 and 2529978804.

It is not an unprimeable number, because it can be changed into a prime (2529978853) 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 47 ways as a sum of consecutive naturals, for example, 626241 + ... + 630267.

It is an arithmetic number, because the mean of its divisors is an integer number (65978640).

Almost surely, 2^2529978858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2529978858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3166974720).

2529978858 is an abundant number, since it is smaller than the sum of its proper divisors (3803970582).

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

2529978858 is a wasteful number, since it uses less digits than its factorization.

2529978858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232 (or 4229 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 63.

The square root of 2529978858 is about 50298.8951966144. The cubic root of 2529978858 is about 1362.6122762231.

The spelling of 2529978858 in words is "two billion, five hundred twenty-nine million, nine hundred seventy-eight thousand, eight hundred fifty-eight".