2649979870 has 8 divisors (see below), whose sum is σ = 4769963784. Its totient is φ = 1059991944.

The previous prime is 2649979859. The next prime is 2649979879. The reversal of 2649979870 is 789799462.

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

It is a super-3 number, since 3×2649979870³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 2649979799 and 2649979808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649979879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132498984 + ... + 132499003.

It is an arithmetic number, because the mean of its divisors is an integer number (596245473).

Almost surely, 2^2649979870 is an apocalyptic number.

2649979870 is a deficient number, since it is larger than the sum of its proper divisors (2119983914).

2649979870 is a wasteful number, since it uses less digits than its factorization.

2649979870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264997994.

The product of its (nonzero) digits is 13716864, while the sum is 61.

The square root of 2649979870 is about 51477.9551847196. The cubic root of 2649979870 is about 1383.8239996799.

The spelling of 2649979870 in words is "two billion, six hundred forty-nine million, nine hundred seventy-nine thousand, eight hundred seventy".