622438133 has 4 divisors (see below), whose sum is σ = 622541100. Its totient is φ = 622335168.

The previous prime is 622438127. The next prime is 622438139. The reversal of 622438133 is 331834226.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331834226 = 2 ⋅165917113.

It is an interprime number because it is at equal distance from previous prime (622438127) and next prime (622438139).

It can be written as a sum of positive squares in 2 ways, for example, as 498271684 + 124166449 = 22322^2 + 11143^2 .

It is a cyclic number.

It is not a de Polignac number, because 622438133 - 2¹² = 622434037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 622438133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622438139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41810 + ... + 54707.

It is an arithmetic number, because the mean of its divisors is an integer number (155635275).

Almost surely, 2^622438133 is an apocalyptic number.

It is an amenable number.

622438133 is a deficient number, since it is larger than the sum of its proper divisors (102967).

622438133 is an equidigital number, since it uses as much as digits as its factorization.

622438133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102966.

The product of its digits is 20736, while the sum is 32.

The square root of 622438133 is about 24948.7100468140. The cubic root of 622438133 is about 853.8181786353.

The spelling of 622438133 in words is "six hundred twenty-two million, four hundred thirty-eight thousand, one hundred thirty-three".