2123117638 has 8 divisors (see below), whose sum is σ = 3185502480. Its totient is φ = 1061283480.

The previous prime is 2123117611. The next prime is 2123117651. The reversal of 2123117638 is 8367113212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127893 + ... + 143536.

It is an arithmetic number, because the mean of its divisors is an integer number (398187810).

Almost surely, 2^2123117638 is an apocalyptic number.

2123117638 is a deficient number, since it is larger than the sum of its proper divisors (1062384842).

2123117638 is a wasteful number, since it uses less digits than its factorization.

2123117638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275342.

The product of its digits is 12096, while the sum is 34.

The square root of 2123117638 is about 46077.3006804869. The cubic root of 2123117638 is about 1285.2610688503.

The spelling of 2123117638 in words is "two billion, one hundred twenty-three million, one hundred seventeen thousand, six hundred thirty-eight".