1093978943 has 2 divisors, whose sum is σ = 1093978944. Its totient is φ = 1093978942.

The previous prime is 1093978891. The next prime is 1093978987. The reversal of 1093978943 is 3498793901.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1093978943 - 2¹⁰ = 1093977919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1093978643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 546989471 + 546989472.

It is an arithmetic number, because the mean of its divisors is an integer number (546989472).

Almost surely, 2^1093978943 is an apocalyptic number.

1093978943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1093978943 is an equidigital number, since it uses as much as digits as its factorization.

1093978943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The square root of 1093978943 is about 33075.3525000112. The cubic root of 1093978943 is about 1030.3932086546.

The spelling of 1093978943 in words is "one billion, ninety-three million, nine hundred seventy-eight thousand, nine hundred forty-three".