4091537893 has 2 divisors, whose sum is σ = 4091537894. Its totient is φ = 4091537892.

The previous prime is 4091537869. The next prime is 4091537897. The reversal of 4091537893 is 3987351904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2169416929 + 1922120964 = 46577^2 + 43842^2 .

It is a cyclic number.

It is not a de Polignac number, because 4091537893 - 2²¹ = 4089440741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4091537897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2045768946 + 2045768947.

It is an arithmetic number, because the mean of its divisors is an integer number (2045768947).

Almost surely, 2^4091537893 is an apocalyptic number.

It is an amenable number.

4091537893 is a deficient number, since it is larger than the sum of its proper divisors (1).

4091537893 is an equidigital number, since it uses as much as digits as its factorization.

4091537893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 4091537893 is about 63965.1302898697. The cubic root of 4091537893 is about 1599.4187853784.

The spelling of 4091537893 in words is "four billion, ninety-one million, five hundred thirty-seven thousand, eight hundred ninety-three".