4158891997 has 8 divisors (see below), whose sum is σ = 4479353816. Its totient is φ = 3838508352.

The previous prime is 4158891967. The next prime is 4158892021. The reversal of 4158891997 is 7991988514.

It can be written as a sum of positive squares in 4 ways, for example, as 975562756 + 3183329241 = 31234^2 + 56421^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4158891997 - 2¹¹ = 4158889949 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 (4158891967) 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 in 7 ways as a sum of consecutive naturals, for example, 138103 + ... + 165499.

It is an arithmetic number, because the mean of its divisors is an integer number (559919227).

Almost surely, 2^4158891997 is an apocalyptic number.

It is an amenable number.

4158891997 is a deficient number, since it is larger than the sum of its proper divisors (320461819).

4158891997 is a wasteful number, since it uses less digits than its factorization.

4158891997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39087.

The product of its digits is 6531840, while the sum is 61.

The square root of 4158891997 is about 64489.4719857435. The cubic root of 4158891997 is about 1608.1475030579.

The spelling of 4158891997 in words is "four billion, one hundred fifty-eight million, eight hundred ninety-one thousand, nine hundred ninety-seven".