226038018978 has 18 divisors (see below), whose sum is σ = 489753411537. Its totient is φ = 75345333960.

The previous prime is 226038018971. The next prime is 226038019027. The reversal of 226038018978 is 879810830622.

It is a happy number.

226038018978 is a `hidden beast` number, since 22 + 60 + 380 + 189 + 7 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 176805953289 + 49232065689 = 420483^2 + 221883^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=336183.

It is not an unprimeable number, because it can be changed into a prime (226038018971) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1961068 + ... + 2073128.

Almost surely, 2^226038018978 is an apocalyptic number.

226038018978 is an abundant number, since it is smaller than the sum of its proper divisors (263715392559).

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

226038018978 is an frugal number, since it uses more digits than its factorization.

226038018978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224130 (or 112066 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 226038018978 in words is "two hundred twenty-six billion, thirty-eight million, eighteen thousand, nine hundred seventy-eight".