541918889 has 4 divisors (see below), whose sum is σ = 542635524. Its totient is φ = 541202256.

The previous prime is 541918879. The next prime is 541918901. The reversal of 541918889 is 988819145.

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 215502400 + 326416489 = 14680^2 + 18067^2 .

It is a cyclic number.

It is not a de Polignac number, because 541918889 - 2⁸ = 541918633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 541918889.

It is not an unprimeable number, because it can be changed into a prime (541918879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357182 + ... + 358695.

It is an arithmetic number, because the mean of its divisors is an integer number (135658881).

Almost surely, 2^541918889 is an apocalyptic number.

It is an amenable number.

541918889 is a deficient number, since it is larger than the sum of its proper divisors (716635).

541918889 is an equidigital number, since it uses as much as digits as its factorization.

541918889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716634.

The product of its digits is 829440, while the sum is 53.

The square root of 541918889 is about 23279.1513805809. The cubic root of 541918889 is about 815.2887124961.

The spelling of 541918889 in words is "five hundred forty-one million, nine hundred eighteen thousand, eight hundred eighty-nine".