536347991 has 2 divisors, whose sum is σ = 536347992. Its totient is φ = 536347990.

The previous prime is 536347963. The next prime is 536347993. The reversal of 536347991 is 199743635.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-536347991 is a prime.

Together with 536347993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (536347993) 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, 268173995 + 268173996.

It is an arithmetic number, because the mean of its divisors is an integer number (268173996).

Almost surely, 2^536347991 is an apocalyptic number.

536347991 is a deficient number, since it is larger than the sum of its proper divisors (1).

536347991 is an equidigital number, since it uses as much as digits as its factorization.

536347991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 47.

The square root of 536347991 is about 23159.1880470797. The cubic root of 536347991 is about 812.4853758630.

The spelling of 536347991 in words is "five hundred thirty-six million, three hundred forty-seven thousand, nine hundred ninety-one".