4189815481 has 8 divisors (see below), whose sum is σ = 4246820480. Its totient is φ = 4132909872.

The previous prime is 4189815463. The next prime is 4189815491. The reversal of 4189815481 is 1845189814.

4189815481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4189815481 - 2⁵ = 4189815449 is a prime.

It is a super-2 number, since 2×4189815481² = 35109107529654522722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4189815491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62086 + ... + 110608.

It is an arithmetic number, because the mean of its divisors is an integer number (530852560).

Almost surely, 2^4189815481 is an apocalyptic number.

It is an amenable number.

4189815481 is a deficient number, since it is larger than the sum of its proper divisors (57004999).

4189815481 is a wasteful number, since it uses less digits than its factorization.

4189815481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49695.

The product of its digits is 368640, while the sum is 49.

The square root of 4189815481 is about 64728.7840222571. The cubic root of 4189815481 is about 1612.1234639195.

The spelling of 4189815481 in words is "four billion, one hundred eighty-nine million, eight hundred fifteen thousand, four hundred eighty-one".