30638657069 has 2 divisors, whose sum is σ = 30638657070. Its totient is φ = 30638657068.

The previous prime is 30638657053. The next prime is 30638657083. The reversal of 30638657069 is 96075683603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30628500100 + 10156969 = 175010^2 + 3187^2 .

It is a cyclic number.

It is not a de Polignac number, because 30638657069 - 2⁴ = 30638657053 is a prime.

It is a super-2 number, since 2×30638657069² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30638657069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30638657089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15319328534 + 15319328535.

It is an arithmetic number, because the mean of its divisors is an integer number (15319328535).

Almost surely, 2^30638657069 is an apocalyptic number.

It is an amenable number.

30638657069 is a deficient number, since it is larger than the sum of its proper divisors (1).

30638657069 is an equidigital number, since it uses as much as digits as its factorization.

30638657069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 30638657069 in words is "thirty billion, six hundred thirty-eight million, six hundred fifty-seven thousand, sixty-nine".