653819069 has 2 divisors, whose sum is σ = 653819070. Its totient is φ = 653819068.

The previous prime is 653819063. The next prime is 653819081. The reversal of 653819069 is 960918356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 653415844 + 403225 = 25562^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 653819069 - 2⁴ = 653819053 is a prime.

It is a super-2 number, since 2×653819069² = 854958749976053522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653819063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326909534 + 326909535.

It is an arithmetic number, because the mean of its divisors is an integer number (326909535).

Almost surely, 2^653819069 is an apocalyptic number.

It is an amenable number.

653819069 is a deficient number, since it is larger than the sum of its proper divisors (1).

653819069 is an equidigital number, since it uses as much as digits as its factorization.

653819069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 653819069 is about 25569.8859794095. The cubic root of 653819069 is about 867.9323201245.

The spelling of 653819069 in words is "six hundred fifty-three million, eight hundred nineteen thousand, sixty-nine".