166153663 has 8 divisors (see below), whose sum is σ = 179455248. Its totient is φ = 152926464.

The previous prime is 166153649. The next prime is 166153667. The reversal of 166153663 is 366351661.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166153663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166153667) 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 7 ways as a sum of consecutive naturals, for example, 13906 + ... + 22927.

It is an arithmetic number, because the mean of its divisors is an integer number (22431906).

Almost surely, 2^166153663 is an apocalyptic number.

166153663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

166153663 is a deficient number, since it is larger than the sum of its proper divisors (13301585).

166153663 is a wasteful number, since it uses less digits than its factorization.

166153663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37193.

The product of its digits is 58320, while the sum is 37.

The square root of 166153663 is about 12890.0606282515. The cubic root of 166153663 is about 549.7559942430.

The spelling of 166153663 in words is "one hundred sixty-six million, one hundred fifty-three thousand, six hundred sixty-three".