1102091909 has 2 divisors, whose sum is σ = 1102091910. Its totient is φ = 1102091908.

The previous prime is 1102091839. The next prime is 1102091927. The reversal of 1102091909 is 9091902011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 604668100 + 497423809 = 24590^2 + 22303^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102091909 - 2¹² = 1102087813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1102094909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551045954 + 551045955.

It is an arithmetic number, because the mean of its divisors is an integer number (551045955).

Almost surely, 2^1102091909 is an apocalyptic number.

It is an amenable number.

1102091909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102091909 is an equidigital number, since it uses as much as digits as its factorization.

1102091909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 1102091909 is about 33197.7696389381. The cubic root of 1102091909 is about 1032.9340756432.

The spelling of 1102091909 in words is "one billion, one hundred two million, ninety-one thousand, nine hundred nine".