1109101993 has 2 divisors, whose sum is σ = 1109101994. Its totient is φ = 1109101992.

The previous prime is 1109101969. The next prime is 1109102011. The reversal of 1109101993 is 3991019011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1106693289 + 2408704 = 33267^2 + 1552^2 .

It is a cyclic number.

It is not a de Polignac number, because 1109101993 - 2¹³ = 1109093801 is a prime.

It is not a weakly prime, because it can be changed into another prime (1109101963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554550996 + 554550997.

It is an arithmetic number, because the mean of its divisors is an integer number (554550997).

Almost surely, 2^1109101993 is an apocalyptic number.

It is an amenable number.

1109101993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109101993 is an equidigital number, since it uses as much as digits as its factorization.

1109101993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2187, while the sum is 34.

The square root of 1109101993 is about 33303.1829259607. The cubic root of 1109101993 is about 1035.1195122870.

The spelling of 1109101993 in words is "one billion, one hundred nine million, one hundred one thousand, nine hundred ninety-three".