4591557126 has 96 divisors (see below), whose sum is σ = 11088499968. Its totient is φ = 1363599360.

The previous prime is 4591557121. The next prime is 4591557133. The reversal of 4591557126 is 6217551954.

It is a happy number.

4591557126 is a `hidden beast` number, since 4 + 5 + 91 + 557 + 1 + 2 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4591557121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4185010 + ... + 4186106.

It is an arithmetic number, because the mean of its divisors is an integer number (115505208).

Almost surely, 2^4591557126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4591557126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5544249984).

4591557126 is an abundant number, since it is smaller than the sum of its proper divisors (6496942842).

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

4591557126 is a wasteful number, since it uses less digits than its factorization.

4591557126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726 (or 1723 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 4591557126 is about 67761.0295523910. The cubic root of 4591557126 is about 1662.0853848838.

It can be divided in two parts, 45915 and 57126, that added together give a square (103041 = 321²).

The spelling of 4591557126 in words is "four billion, five hundred ninety-one million, five hundred fifty-seven thousand, one hundred twenty-six".