2278981998 has 24 divisors (see below), whose sum is σ = 5007343536. Its totient is φ = 748960800.

The previous prime is 2278981993. The next prime is 2278982009. The reversal of 2278981998 is 8991898722.

2278981998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278981993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 890343 + ... + 892898.

It is an arithmetic number, because the mean of its divisors is an integer number (208639314).

Almost surely, 2^2278981998 is an apocalyptic number.

2278981998 is an abundant number, since it is smaller than the sum of its proper divisors (2728361538).

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

2278981998 is a wasteful number, since it uses less digits than its factorization.

2278981998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783320 (or 1783317 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 63.

The square root of 2278981998 is about 47738.6845021938. The cubic root of 2278981998 is about 1315.9729575501.

The spelling of 2278981998 in words is "two billion, two hundred seventy-eight million, nine hundred eighty-one thousand, nine hundred ninety-eight".