4187533681 has 4 divisors (see below), whose sum is σ = 4211739252. Its totient is φ = 4163328112.

The previous prime is 4187533631. The next prime is 4187533699. The reversal of 4187533681 is 1863357814.

4187533681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4065210081 + 122323600 = 63759^2 + 11060^2 .

It is a cyclic number.

It is not a de Polignac number, because 4187533681 - 2¹¹ = 4187531633 is a prime.

It is a super-2 number, since 2×4187533681² = 35070876659018819522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4187533631) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12102526 + ... + 12102871.

It is an arithmetic number, because the mean of its divisors is an integer number (1052934813).

Almost surely, 2^4187533681 is an apocalyptic number.

It is an amenable number.

4187533681 is a deficient number, since it is larger than the sum of its proper divisors (24205571).

4187533681 is a wasteful number, since it uses less digits than its factorization.

4187533681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24205570.

The product of its digits is 483840, while the sum is 46.

The square root of 4187533681 is about 64711.1557693108. The cubic root of 4187533681 is about 1611.8307532321.

The spelling of 4187533681 in words is "four billion, one hundred eighty-seven million, five hundred thirty-three thousand, six hundred eighty-one".