166417190 has 16 divisors (see below), whose sum is σ = 312575328. Its totient is φ = 63672576.

The previous prime is 166417187. The next prime is 166417193. The reversal of 166417190 is 91714661.

It is an interprime number because it is at equal distance from previous prime (166417187) and next prime (166417193).

It is a super-2 number, since 2×166417190² = 55389362254992200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166417190.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166417193) 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, 361547 + ... + 362006.

It is an arithmetic number, because the mean of its divisors is an integer number (19535958).

Almost surely, 2^166417190 is an apocalyptic number.

166417190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166417190 is a deficient number, since it is larger than the sum of its proper divisors (146158138).

166417190 is a wasteful number, since it uses less digits than its factorization.

166417190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723583.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 166417190 is about 12900.2786791604. The cubic root of 166417190 is about 550.0464864289.

The spelling of 166417190 in words is "one hundred sixty-six million, four hundred seventeen thousand, one hundred ninety".