1109739361 has 2 divisors, whose sum is σ = 1109739362. Its totient is φ = 1109739360.

The previous prime is 1109739359. The next prime is 1109739377. The reversal of 1109739361 is 1639379011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1089990225 + 19749136 = 33015^2 + 4444^2 .

It is an emirp because it is prime and its reverse (1639379011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1109739361 - 2¹ = 1109739359 is a prime.

Together with 1109739359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1109739391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554869680 + 554869681.

It is an arithmetic number, because the mean of its divisors is an integer number (554869681).

Almost surely, 2^1109739361 is an apocalyptic number.

It is an amenable number.

1109739361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109739361 is an equidigital number, since it uses as much as digits as its factorization.

1109739361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 1109739361 is about 33312.7507270114. The cubic root of 1109739361 is about 1035.3177584711.

The spelling of 1109739361 in words is "one billion, one hundred nine million, seven hundred thirty-nine thousand, three hundred sixty-one".