166118390 has 16 divisors (see below), whose sum is σ = 316602432. Its totient is φ = 62538624.

The previous prime is 166118389. The next prime is 166118423. The reversal of 166118390 is 93811661.

It is a self number, because there is not a number n which added to its sum of digits gives 166118390.

It is a congruent number.

It is an unprimeable number.

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, 488414 + ... + 488753.

It is an arithmetic number, because the mean of its divisors is an integer number (19787652).

Almost surely, 2^166118390 is an apocalyptic number.

166118390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166118390 is a deficient number, since it is larger than the sum of its proper divisors (150484042).

166118390 is a wasteful number, since it uses less digits than its factorization.

166118390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977191.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 166118390 is about 12888.6923308767. The cubic root of 166118390 is about 549.7170886596.

The spelling of 166118390 in words is "one hundred sixty-six million, one hundred eighteen thousand, three hundred ninety".