4111891097 has 4 divisors (see below), whose sum is σ = 4112056356. Its totient is φ = 4111725840.

The previous prime is 4111891081. The next prime is 4111891151. The reversal of 4111891097 is 7901981114.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7054336 + 4104836761 = 2656^2 + 64069^2 .

It is a cyclic number.

It is not a de Polignac number, because 4111891097 - 2⁴ = 4111891081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4111891027) 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, 36854 + ... + 97887.

It is an arithmetic number, because the mean of its divisors is an integer number (1028014089).

Almost surely, 2^4111891097 is an apocalyptic number.

It is an amenable number.

4111891097 is a deficient number, since it is larger than the sum of its proper divisors (165259).

4111891097 is a wasteful number, since it uses less digits than its factorization.

4111891097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165258.

The product of its (nonzero) digits is 18144, while the sum is 41.

The square root of 4111891097 is about 64124.0290140911. The cubic root of 4111891097 is about 1602.0664831358.

The spelling of 4111891097 in words is "four billion, one hundred eleven million, eight hundred ninety-one thousand, ninety-seven".