2618728890 has 16 divisors (see below), whose sum is σ = 6284949408. Its totient is φ = 698327696.

The previous prime is 2618728883. The next prime is 2618728921. The reversal of 2618728890 is 988278162.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43645452 + ... + 43645511.

It is an arithmetic number, because the mean of its divisors is an integer number (392809338).

Almost surely, 2^2618728890 is an apocalyptic number.

2618728890 is an abundant number, since it is smaller than the sum of its proper divisors (3666220518).

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

2618728890 is a wasteful number, since it uses less digits than its factorization.

2618728890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87290973.

The product of its (nonzero) digits is 774144, while the sum is 51.

The square root of 2618728890 is about 51173.5174675339. The cubic root of 2618728890 is about 1378.3627032351.

The spelling of 2618728890 in words is "two billion, six hundred eighteen million, seven hundred twenty-eight thousand, eight hundred ninety".