2661630198 has 8 divisors (see below), whose sum is σ = 5323260408. Its totient is φ = 887210064.

The previous prime is 2661630133. The next prime is 2661630199. The reversal of 2661630198 is 8910361662.

2661630198 is digitally balanced in base 2, because in such base 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.

2661630198 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661630199) 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, 221802511 + ... + 221802522.

It is an arithmetic number, because the mean of its divisors is an integer number (665407551).

Almost surely, 2^2661630198 is an apocalyptic number.

2661630198 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.

2661630198 is a wasteful number, since it uses less digits than its factorization.

2661630198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443605038.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 2661630198 is about 51590.9895039822. The cubic root of 2661630198 is about 1385.8489754214.

The spelling of 2661630198 in words is "two billion, six hundred sixty-one million, six hundred thirty thousand, one hundred ninety-eight".