2421226638 has 12 divisors (see below), whose sum is σ = 5245991088. Its totient is φ = 807075540.

The previous prime is 2421226631. The next prime is 2421226651. The reversal of 2421226638 is 8366221242.

2421226638 is a `hidden beast` number, since 2 + 4 + 2 + 12 + 2 + 6 + 638 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421226631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67256278 + ... + 67256313.

It is an arithmetic number, because the mean of its divisors is an integer number (437165924).

Almost surely, 2^2421226638 is an apocalyptic number.

2421226638 is an abundant number, since it is smaller than the sum of its proper divisors (2824764450).

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

2421226638 is a wasteful number, since it uses less digits than its factorization.

2421226638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134512599 (or 134512596 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 2421226638 is about 49205.9614071303. The cubic root of 2421226638 is about 1342.8014898760.

The spelling of 2421226638 in words is "two billion, four hundred twenty-one million, two hundred twenty-six thousand, six hundred thirty-eight".