166423395 has 8 divisors (see below), whose sum is σ = 266277456. Its totient is φ = 88759136.

The previous prime is 166423393. The next prime is 166423399. The reversal of 166423395 is 593324661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166423395 - 2¹ = 166423393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166423391) 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 7 ways as a sum of consecutive naturals, for example, 5547432 + ... + 5547461.

It is an arithmetic number, because the mean of its divisors is an integer number (33284682).

Almost surely, 2^166423395 is an apocalyptic number.

166423395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166423395 is a deficient number, since it is larger than the sum of its proper divisors (99854061).

166423395 is a wasteful number, since it uses less digits than its factorization.

166423395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11094901.

The product of its digits is 116640, while the sum is 39.

The square root of 166423395 is about 12900.5191755991. The cubic root of 166423395 is about 550.0533226539.

The spelling of 166423395 in words is "one hundred sixty-six million, four hundred twenty-three thousand, three hundred ninety-five".