166422369 has 8 divisors (see below), whose sum is σ = 222468480. Its totient is φ = 110662256.

The previous prime is 166422359. The next prime is 166422371. The reversal of 166422369 is 963224661.

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 166422369 - 2¹⁶ = 166356833 is a prime.

It is a super-2 number, since 2×166422369² = 55392809807144322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166422359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70137 + ... + 72470.

It is an arithmetic number, because the mean of its divisors is an integer number (27808560).

Almost surely, 2^166422369 is an apocalyptic number.

It is an amenable number.

166422369 is a deficient number, since it is larger than the sum of its proper divisors (56046111).

166422369 is a wasteful number, since it uses less digits than its factorization.

166422369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142999.

The product of its digits is 93312, while the sum is 39.

The square root of 166422369 is about 12900.4794096964. The cubic root of 166422369 is about 550.0521922922.

The spelling of 166422369 in words is "one hundred sixty-six million, four hundred twenty-two thousand, three hundred sixty-nine".