1009181818111 has 2 divisors, whose sum is σ = 1009181818112. Its totient is φ = 1009181818110.

The previous prime is 1009181818081. The next prime is 1009181818147. The reversal of 1009181818111 is 1118181819001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1009181818111 - 2²³ = 1009173429503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1009181810111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504590909055 + 504590909056.

It is an arithmetic number, because the mean of its divisors is an integer number (504590909056).

Almost surely, 2^{1009181818111} is an apocalyptic number.

1009181818111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009181818111 is an equidigital number, since it uses as much as digits as its factorization.

1009181818111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 40.

The spelling of 1009181818111 in words is "one trillion, nine billion, one hundred eighty-one million, eight hundred eighteen thousand, one hundred eleven".