5438635541 has 4 divisors (see below), whose sum is σ = 5441842092. Its totient is φ = 5435428992.

The previous prime is 5438635511. The next prime is 5438635547. The reversal of 5438635541 is 1455368345.

It is a happy number.

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 3880044100 + 1558591441 = 62290^2 + 39479^2 .

It is a cyclic number.

It is not a de Polignac number, because 5438635541 - 2³⁰ = 4364893717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5438635492 and 5438635501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5438635547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1600730 + ... + 1604123.

It is an arithmetic number, because the mean of its divisors is an integer number (1360460523).

Almost surely, 2^5438635541 is an apocalyptic number.

It is an amenable number.

5438635541 is a deficient number, since it is larger than the sum of its proper divisors (3206551).

5438635541 is a wasteful number, since it uses less digits than its factorization.

5438635541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206550.

The product of its digits is 864000, while the sum is 44.

The square root of 5438635541 is about 73747.1053059034. The cubic root of 5438635541 is about 1758.5848150528.

The spelling of 5438635541 in words is "five billion, four hundred thirty-eight million, six hundred thirty-five thousand, five hundred forty-one".