1009111055 has 8 divisors (see below), whose sum is σ = 1213343712. Its totient is φ = 805681888.

The previous prime is 1009111049. The next prime is 1009111067. The reversal of 1009111055 is 5501119001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1009111055 - 2¹⁶ = 1009045519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1009111055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198104 + ... + 203133.

It is an arithmetic number, because the mean of its divisors is an integer number (151667964).

Almost surely, 2^1009111055 is an apocalyptic number.

1009111055 is a deficient number, since it is larger than the sum of its proper divisors (204232657).

1009111055 is an equidigital number, since it uses as much as digits as its factorization.

1009111055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401745.

The product of its (nonzero) digits is 225, while the sum is 23.

The square root of 1009111055 is about 31766.5083854049. The cubic root of 1009111055 is about 1003.0278412577.

The spelling of 1009111055 in words is "one billion, nine million, one hundred eleven thousand, fifty-five".