2159611912 has 8 divisors (see below), whose sum is σ = 4049272350. Its totient is φ = 1079805952.

The previous prime is 2159611891. The next prime is 2159611963. The reversal of 2159611912 is 2191169512.

It can be written as a sum of positive squares in only one way, i.e., 1981496196 + 178115716 = 44514^2 + 13346^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2159611912² = 9327847220904591488, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134975737 + ... + 134975752.

Almost surely, 2^2159611912 is an apocalyptic number.

It is an amenable number.

2159611912 is a deficient number, since it is larger than the sum of its proper divisors (1889660438).

2159611912 is a wasteful number, since it uses less digits than its factorization.

2159611912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269951495 (or 269951491 counting only the distinct ones).

The product of its digits is 9720, while the sum is 37.

The square root of 2159611912 is about 46471.6248048204. The cubic root of 2159611912 is about 1292.5833917664.

The spelling of 2159611912 in words is "two billion, one hundred fifty-nine million, six hundred eleven thousand, nine hundred twelve".