4278090198 has 32 divisors (see below), whose sum is σ = 9053706240. Its totient is φ = 1343895840.

The previous prime is 4278090197. The next prime is 4278090209. The reversal of 4278090198 is 8910908724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4278090197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76465 + ... + 120012.

It is an arithmetic number, because the mean of its divisors is an integer number (282928320).

Almost surely, 2^4278090198 is an apocalyptic number.

4278090198 is an abundant number, since it is smaller than the sum of its proper divisors (4775616042).

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

4278090198 is a wasteful number, since it uses less digits than its factorization.

4278090198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196692.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 4278090198 is about 65407.1112188881. Note that the first 3 decimals coincide. The cubic root of 4278090198 is about 1623.3667469151.

The spelling of 4278090198 in words is "four billion, two hundred seventy-eight million, ninety thousand, one hundred ninety-eight".