4081191523 has 2 divisors, whose sum is σ = 4081191524. Its totient is φ = 4081191522.

The previous prime is 4081191473. The next prime is 4081191637. The reversal of 4081191523 is 3251911804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4081191523 - 2²⁵ = 4047637091 is a prime.

It is a super-3 number, since 3×4081191523³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (4081191223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2040595761 + 2040595762.

It is an arithmetic number, because the mean of its divisors is an integer number (2040595762).

Almost surely, 2^4081191523 is an apocalyptic number.

4081191523 is a deficient number, since it is larger than the sum of its proper divisors (1).

4081191523 is an equidigital number, since it uses as much as digits as its factorization.

4081191523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 4081191523 is about 63884.2040178948. The cubic root of 4081191523 is about 1598.0694845212.

The spelling of 4081191523 in words is "four billion, eighty-one million, one hundred ninety-one thousand, five hundred twenty-three".