1091344207 has 2 divisors, whose sum is σ = 1091344208. Its totient is φ = 1091344206.

The previous prime is 1091344141. The next prime is 1091344213. The reversal of 1091344207 is 7024431901.

It is a strong prime.

It is an emirp because it is prime and its reverse (7024431901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1091344207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1091344217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545672103 + 545672104.

It is an arithmetic number, because the mean of its divisors is an integer number (545672104).

Almost surely, 2^1091344207 is an apocalyptic number.

1091344207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091344207 is an equidigital number, since it uses as much as digits as its factorization.

1091344207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1091344207 is about 33035.4991940488. The cubic root of 1091344207 is about 1029.5653449284.

The spelling of 1091344207 in words is "one billion, ninety-one million, three hundred forty-four thousand, two hundred seven".