2163660402 has 8 divisors (see below), whose sum is σ = 4327320816. Its totient is φ = 721220132.

The previous prime is 2163660371. The next prime is 2163660403. The reversal of 2163660402 is 2040663612.

2163660402 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

2163660402 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2163660402.

It is not an unprimeable number, because it can be changed into a prime (2163660403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180305028 + ... + 180305039.

It is an arithmetic number, because the mean of its divisors is an integer number (540915102).

Almost surely, 2^2163660402 is an apocalyptic number.

2163660402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2163660402 is a wasteful number, since it uses less digits than its factorization.

2163660402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360610072.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 2163660402 is about 46515.1631406362. The cubic root of 2163660402 is about 1293.3905961084.

The spelling of 2163660402 in words is "two billion, one hundred sixty-three million, six hundred sixty thousand, four hundred two".