1660194 has 12 divisors (see below), whose sum is σ = 3597126. Its totient is φ = 553392.

The previous prime is 1660189. The next prime is 1660199. The reversal of 1660194 is 4910661.

It is an interprime number because it is at equal distance from previous prime (1660189) and next prime (1660199).

It can be written as a sum of positive squares in only one way, i.e., 1595169 + 65025 = 1263^2 + 255^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1660199) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46099 + ... + 46134.

2^1660194 is an apocalyptic number.

1660194 is an abundant number, since it is smaller than the sum of its proper divisors (1936932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1660194 is a wasteful number, since it uses less digits than its factorization.

1660194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92241 (or 92238 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1660194 is about 1288.4851570740. The cubic root of 1660194 is about 118.4094271317.

The spelling of 1660194 in words is "one million, six hundred sixty thousand, one hundred ninety-four".