2078131998 has 8 divisors (see below), whose sum is σ = 4156264008. Its totient is φ = 692710664.

The previous prime is 2078131997. The next prime is 2078132053. The reversal of 2078131998 is 8991318702.

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

2078131998 is an admirable number.

It is a super-2 number, since 2×2078131998² = 8637265202222944008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078131997) 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, 173177661 + ... + 173177672.

It is an arithmetic number, because the mean of its divisors is an integer number (519533001).

Almost surely, 2^2078131998 is an apocalyptic number.

2078131998 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.

2078131998 is a wasteful number, since it uses less digits than its factorization.

2078131998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346355338.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 2078131998 is about 45586.5330772148. The cubic root of 2078131998 is about 1276.1186129227.

The spelling of 2078131998 in words is "two billion, seventy-eight million, one hundred thirty-one thousand, nine hundred ninety-eight".