2978418218226 has 32 divisors (see below), whose sum is σ = 6656863784256. Its totient is φ = 880537536000.

The previous prime is 2978418218221. The next prime is 2978418218231. The reversal of 2978418218226 is 6228128148792.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2978418218221) and next prime (2978418218231).

It is a self number, because there is not a number n which added to its sum of digits gives 2978418218226.

It is not an unprimeable number, because it can be changed into a prime (2978418218221) 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, 550333255 + ... + 550338666.

It is an arithmetic number, because the mean of its divisors is an integer number (208026993258).

Almost surely, 2^{2978418218226} is an apocalyptic number.

2978418218226 is an abundant number, since it is smaller than the sum of its proper divisors (3678445566030).

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

2978418218226 is a wasteful number, since it uses less digits than its factorization.

2978418218226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100671978.

The product of its digits is 12386304, while the sum is 60.

The spelling of 2978418218226 in words is "two trillion, nine hundred seventy-eight billion, four hundred eighteen million, two hundred eighteen thousand, two hundred twenty-six".