541778166 has 16 divisors (see below), whose sum is σ = 1203951600. Its totient is φ = 180592704.

The previous prime is 541778143. The next prime is 541778183. The reversal of 541778166 is 661877145.

541778166 is a `hidden beast` number, since 5 + 417 + 78 + 166 = 666.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 5016411 + ... + 5016518.

It is an arithmetic number, because the mean of its divisors is an integer number (75246975).

Almost surely, 2^541778166 is an apocalyptic number.

541778166 is an abundant number, since it is smaller than the sum of its proper divisors (662173434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

541778166 is a wasteful number, since it uses less digits than its factorization.

541778166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10032940 (or 10032934 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 541778166 is about 23276.1286729559. The cubic root of 541778166 is about 815.2181362481.

The spelling of 541778166 in words is "five hundred forty-one million, seven hundred seventy-eight thousand, one hundred sixty-six".