2163977168 has 10 divisors (see below), whose sum is σ = 4192705794. Its totient is φ = 1081988576.

The previous prime is 2163977119. The next prime is 2163977251. The reversal of 2163977168 is 8617793612.

2163977168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1441872784 + 722104384 = 37972^2 + 26872^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67624271 + ... + 67624302.

Almost surely, 2^2163977168 is an apocalyptic number.

It is an amenable number.

2163977168 is a deficient number, since it is larger than the sum of its proper divisors (2028728626).

2163977168 is a wasteful number, since it uses less digits than its factorization.

2163977168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135248581 (or 135248575 counting only the distinct ones).

The product of its digits is 762048, while the sum is 50.

The square root of 2163977168 is about 46518.5679917170. The cubic root of 2163977168 is about 1293.4537117084.

The spelling of 2163977168 in words is "two billion, one hundred sixty-three million, nine hundred seventy-seven thousand, one hundred sixty-eight".