2118655790 has 16 divisors (see below), whose sum is σ = 3851340480. Its totient is φ = 839071200.

The previous prime is 2118655789. The next prime is 2118655901. The reversal of 2118655790 is 975568112.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1047830 + ... + 1049849.

It is an arithmetic number, because the mean of its divisors is an integer number (240708780).

Almost surely, 2^2118655790 is an apocalyptic number.

2118655790 is a deficient number, since it is larger than the sum of its proper divisors (1732684690).

2118655790 is a wasteful number, since it uses less digits than its factorization.

2118655790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097787.

The product of its (nonzero) digits is 151200, while the sum is 44.

The square root of 2118655790 is about 46028.8582304623. The cubic root of 2118655790 is about 1284.3600885587.

The spelling of 2118655790 in words is "two billion, one hundred eighteen million, six hundred fifty-five thousand, seven hundred ninety".