219731927039 has 2 divisors, whose sum is σ = 219731927040. Its totient is φ = 219731927038.

The previous prime is 219731927033. The next prime is 219731927071. The reversal of 219731927039 is 930729137912.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-219731927039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (219731927033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109865963519 + 109865963520.

It is an arithmetic number, because the mean of its divisors is an integer number (109865963520).

Almost surely, 2^219731927039 is an apocalyptic number.

219731927039 is a deficient number, since it is larger than the sum of its proper divisors (1).

219731927039 is an equidigital number, since it uses as much as digits as its factorization.

219731927039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1285956, while the sum is 53.

The spelling of 219731927039 in words is "two hundred nineteen billion, seven hundred thirty-one million, nine hundred twenty-seven thousand, thirty-nine".