538651679 has 2 divisors, whose sum is σ = 538651680. Its totient is φ = 538651678.

The previous prime is 538651643. The next prime is 538651699. The reversal of 538651679 is 976156835.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538651679 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538651609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269325839 + 269325840.

It is an arithmetic number, because the mean of its divisors is an integer number (269325840).

Almost surely, 2^538651679 is an apocalyptic number.

538651679 is a deficient number, since it is larger than the sum of its proper divisors (1).

538651679 is an equidigital number, since it uses as much as digits as its factorization.

538651679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 50.

The square root of 538651679 is about 23208.8706963523. The cubic root of 538651679 is about 813.6469596754.

The spelling of 538651679 in words is "five hundred thirty-eight million, six hundred fifty-one thousand, six hundred seventy-nine".