9904188541 has 4 divisors (see below), whose sum is σ = 10666049212. Its totient is φ = 9142327872.

The previous prime is 9904188529. The next prime is 9904188563. The reversal of 9904188541 is 1458814099.

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 1777887225 + 8126301316 = 42165^2 + 90146^2 .

It is a cyclic number.

It is not a de Polignac number, because 9904188541 - 2⁵ = 9904188509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9904188241) 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, 380930316 + ... + 380930341.

It is an arithmetic number, because the mean of its divisors is an integer number (2666512303).

Almost surely, 2^9904188541 is an apocalyptic number.

It is an amenable number.

9904188541 is a deficient number, since it is larger than the sum of its proper divisors (761860671).

9904188541 is a wasteful number, since it uses less digits than its factorization.

9904188541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761860670.

The product of its (nonzero) digits is 414720, while the sum is 49.

The square root of 9904188541 is about 99519.7896953164. The cubic root of 9904188541 is about 2147.5319464376.

The spelling of 9904188541 in words is "nine billion, nine hundred four million, one hundred eighty-eight thousand, five hundred forty-one".