1091141047 has 2 divisors, whose sum is σ = 1091141048. Its totient is φ = 1091141046.

The previous prime is 1091141033. The next prime is 1091141057. The reversal of 1091141047 is 7401411901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1091141047 - 2¹⁵ = 1091108279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1091141017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545570523 + 545570524.

It is an arithmetic number, because the mean of its divisors is an integer number (545570524).

Almost surely, 2^1091141047 is an apocalyptic number.

1091141047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091141047 is an equidigital number, since it uses as much as digits as its factorization.

1091141047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1091141047 is about 33032.4241768599. The cubic root of 1091141047 is about 1029.5014544606.

Adding to 1091141047 its reverse (7401411901), we get a palindrome (8492552948).

The spelling of 1091141047 in words is "one billion, ninety-one million, one hundred forty-one thousand, forty-seven".