1001411855 has 4 divisors (see below), whose sum is σ = 1201694232. Its totient is φ = 801129480.

The previous prime is 1001411837. The next prime is 1001411857. The reversal of 1001411855 is 5581141001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5581141001 = 311 ⋅17945791.

It is not a de Polignac number, because 1001411855 - 2⁸ = 1001411599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001411857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100141181 + ... + 100141190.

It is an arithmetic number, because the mean of its divisors is an integer number (300423558).

Almost surely, 2^1001411855 is an apocalyptic number.

1001411855 is a deficient number, since it is larger than the sum of its proper divisors (200282377).

1001411855 is an equidigital number, since it uses as much as digits as its factorization.

1001411855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200282376.

The product of its (nonzero) digits is 800, while the sum is 26.

The square root of 1001411855 is about 31645.0921155240. The cubic root of 1001411855 is about 1000.4703970253.

Adding to 1001411855 its reverse (5581141001), we get a palindrome (6582552856).

The spelling of 1001411855 in words is "one billion, one million, four hundred eleven thousand, eight hundred fifty-five".