2118563672 has 32 divisors (see below), whose sum is σ = 4212989280. Its totient is φ = 996610560.

The previous prime is 2118563639. The next prime is 2118563677. The reversal of 2118563672 is 2763658112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118563677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83153 + ... + 105600.

It is an arithmetic number, because the mean of its divisors is an integer number (131655915).

Almost surely, 2^2118563672 is an apocalyptic number.

It is an amenable number.

2118563672 is a deficient number, since it is larger than the sum of its proper divisors (2094425608).

2118563672 is a wasteful number, since it uses less digits than its factorization.

2118563672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188843 (or 188839 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 2118563672 is about 46027.8575647401. The cubic root of 2118563672 is about 1284.3414738632.

The spelling of 2118563672 in words is "two billion, one hundred eighteen million, five hundred sixty-three thousand, six hundred seventy-two".