622042913 has 2 divisors, whose sum is σ = 622042914. Its totient is φ = 622042912.

The previous prime is 622042907. The next prime is 622042951. The reversal of 622042913 is 319240226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 488940544 + 133102369 = 22112^2 + 11537^2 .

It is a cyclic number.

It is not a de Polignac number, because 622042913 - 2⁶ = 622042849 is a prime.

It is a super-2 number, since 2×622042913² = 773874771227051138, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (622042963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311021456 + 311021457.

It is an arithmetic number, because the mean of its divisors is an integer number (311021457).

Almost surely, 2^622042913 is an apocalyptic number.

It is an amenable number.

622042913 is a deficient number, since it is larger than the sum of its proper divisors (1).

622042913 is an equidigital number, since it uses as much as digits as its factorization.

622042913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 622042913 is about 24940.7881391106. The cubic root of 622042913 is about 853.6374284270.

The spelling of 622042913 in words is "six hundred twenty-two million, forty-two thousand, nine hundred thirteen".