541187866 has 4 divisors (see below), whose sum is σ = 811781802. Its totient is φ = 270593932.

The previous prime is 541187839. The next prime is 541187869. The reversal of 541187866 is 668781145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 668781145 = 5 ⋅133756229.

It can be written as a sum of positive squares in only one way, i.e., 369446841 + 171741025 = 19221^2 + 13105^2 .

It is a super-3 number, since 3×541187866³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (541187869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135296965 + ... + 135296968.

Almost surely, 2^541187866 is an apocalyptic number.

541187866 is a deficient number, since it is larger than the sum of its proper divisors (270593936).

541187866 is a wasteful number, since it uses less digits than its factorization.

541187866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270593935.

The product of its digits is 322560, while the sum is 46.

The square root of 541187866 is about 23263.4448437887. Note that the first 3 decimals coincide. The cubic root of 541187866 is about 814.9219522034.

The spelling of 541187866 in words is "five hundred forty-one million, one hundred eighty-seven thousand, eight hundred sixty-six".