166830019 has 4 divisors (see below), whose sum is σ = 166953960. Its totient is φ = 166706080.

The previous prime is 166830007. The next prime is 166830023. The reversal of 166830019 is 910038661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166830019 - 2¹³ = 166821827 is a prime.

It is a super-2 number, since 2×166830019² = 55664510479080722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166830029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59929 + ... + 62650.

It is an arithmetic number, because the mean of its divisors is an integer number (41738490).

Almost surely, 2^166830019 is an apocalyptic number.

166830019 is a deficient number, since it is larger than the sum of its proper divisors (123941).

166830019 is a wasteful number, since it uses less digits than its factorization.

166830019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123940.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 166830019 is about 12916.2695465835. The cubic root of 166830019 is about 550.5009419489.

The spelling of 166830019 in words is "one hundred sixty-six million, eight hundred thirty thousand, nineteen".