1061791543 has 2 divisors, whose sum is σ = 1061791544. Its totient is φ = 1061791542.

The previous prime is 1061791541. The next prime is 1061791547. The reversal of 1061791543 is 3451971601.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1061791543 - 2¹ = 1061791541 is a prime.

It is a super-2 number, since 2×1061791543² = 2254802561572641698, which contains 22 as substring.

Together with 1061791541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061791541) 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, 530895771 + 530895772.

It is an arithmetic number, because the mean of its divisors is an integer number (530895772).

Almost surely, 2^1061791543 is an apocalyptic number.

1061791543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061791543 is an equidigital number, since it uses as much as digits as its factorization.

1061791543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 1061791543 is about 32585.1429795850. The cubic root of 1061791543 is about 1020.1869268461.

The spelling of 1061791543 in words is "one billion, sixty-one million, seven hundred ninety-one thousand, five hundred forty-three".