2009596878 has 48 divisors (see below), whose sum is σ = 4625567856. Its totient is φ = 653520960.

The previous prime is 2009596829. The next prime is 2009596903. The reversal of 2009596878 is 8786959002.

It is a happy number.

It is a super-2 number, since 2×2009596878² = 8076959224134693768, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 30501 + ... + 70352.

It is an arithmetic number, because the mean of its divisors is an integer number (96365997).

Almost surely, 2^2009596878 is an apocalyptic number.

2009596878 is an abundant number, since it is smaller than the sum of its proper divisors (2615970978).

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

2009596878 is a wasteful number, since it uses less digits than its factorization.

2009596878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100911 (or 100899 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 2009596878 is about 44828.5275020271. The cubic root of 2009596878 is about 1261.9330532607.

The spelling of 2009596878 in words is "two billion, nine million, five hundred ninety-six thousand, eight hundred seventy-eight".