1093926991 has 2 divisors, whose sum is σ = 1093926992. Its totient is φ = 1093926990.

The previous prime is 1093926971. The next prime is 1093927007. The reversal of 1093926991 is 1996293901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1093926991 - 2⁹ = 1093926479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1093926961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 546963495 + 546963496.

It is an arithmetic number, because the mean of its divisors is an integer number (546963496).

Almost surely, 2^1093926991 is an apocalyptic number.

1093926991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1093926991 is an equidigital number, since it uses as much as digits as its factorization.

1093926991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236196, while the sum is 49.

The square root of 1093926991 is about 33074.5671324660. The cubic root of 1093926991 is about 1030.3768976047.

The spelling of 1093926991 in words is "one billion, ninety-three million, nine hundred twenty-six thousand, nine hundred ninety-one".