4156491136 has 64 divisors (see below), whose sum is σ = 9476232480. Its totient is φ = 1778946048.

The previous prime is 4156491103. The next prime is 4156491151. The reversal of 4156491136 is 6311946514.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 765166 + ... + 770578.

Almost surely, 2^4156491136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4156491136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4738116240).

4156491136 is an abundant number, since it is smaller than the sum of its proper divisors (5319741344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4156491136 is an equidigital number, since it uses as much as digits as its factorization.

4156491136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6291 (or 6279 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 4156491136 is about 64470.8549346137. The cubic root of 4156491136 is about 1607.8379909879.

The spelling of 4156491136 in words is "four billion, one hundred fifty-six million, four hundred ninety-one thousand, one hundred thirty-six".