166190041 has 4 divisors (see below), whose sum is σ = 167498752. Its totient is φ = 164881332.

The previous prime is 166190023. The next prime is 166190069. The reversal of 166190041 is 140091661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166190041 - 2¹³ = 166181849 is a prime.

It is a super-3 number, since 3×166190041³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166189991 and 166190009.

It is not an unprimeable number, because it can be changed into a prime (166190071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654165 + ... + 654418.

It is an arithmetic number, because the mean of its divisors is an integer number (41874688).

Almost surely, 2^166190041 is an apocalyptic number.

It is an amenable number.

166190041 is a deficient number, since it is larger than the sum of its proper divisors (1308711).

166190041 is a wasteful number, since it uses less digits than its factorization.

166190041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308710.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 166190041 is about 12891.4716382576. The cubic root of 166190041 is about 549.7961128573.

The spelling of 166190041 in words is "one hundred sixty-six million, one hundred ninety thousand, forty-one".