4091537887 has 4 divisors (see below), whose sum is σ = 4191331536. Its totient is φ = 3991744240.

The previous prime is 4091537869. The next prime is 4091537893. The reversal of 4091537887 is 7887351904.

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

It is a cyclic number.

It is not a de Polignac number, because 4091537887 - 2¹¹ = 4091535839 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 (4091537867) 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, 49896763 + ... + 49896844.

It is an arithmetic number, because the mean of its divisors is an integer number (1047832884).

Almost surely, 2^4091537887 is an apocalyptic number.

4091537887 is a deficient number, since it is larger than the sum of its proper divisors (99793649).

4091537887 is an equidigital number, since it uses as much as digits as its factorization.

4091537887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99793648.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The square root of 4091537887 is about 63965.1302429691. The cubic root of 4091537887 is about 1599.4187845966.

The spelling of 4091537887 in words is "four billion, ninety-one million, five hundred thirty-seven thousand, eight hundred eighty-seven".