239814658649 has 2 divisors, whose sum is σ = 239814658650. Its totient is φ = 239814658648.

The previous prime is 239814658609. The next prime is 239814658729. The reversal of 239814658649 is 946856418932.

239814658649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216750769225 + 23063889424 = 465565^2 + 151868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239814658649 is a prime.

It is a super-2 number, since 2×239814658649² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (239814658609) 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, 119907329324 + 119907329325.

It is an arithmetic number, because the mean of its divisors is an integer number (119907329325).

Almost surely, 2^239814658649 is an apocalyptic number.

It is an amenable number.

239814658649 is a deficient number, since it is larger than the sum of its proper divisors (1).

239814658649 is an equidigital number, since it uses as much as digits as its factorization.

239814658649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 89579520, while the sum is 65.

The spelling of 239814658649 in words is "two hundred thirty-nine billion, eight hundred fourteen million, six hundred fifty-eight thousand, six hundred forty-nine".