194148666 has 12 divisors (see below), whose sum is σ = 420655482. Its totient is φ = 64716216.

The previous prime is 194148659. The next prime is 194148677. The reversal of 194148666 is 666841491.

It can be written as a sum of positive squares in only one way, i.e., 181037025 + 13111641 = 13455^2 + 3621^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5393001 + ... + 5393036.

Almost surely, 2^194148666 is an apocalyptic number.

194148666 is an abundant number, since it is smaller than the sum of its proper divisors (226506816).

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

194148666 is a wasteful number, since it uses less digits than its factorization.

194148666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10786045 (or 10786042 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 194148666 is about 13933.7240535329. The cubic root of 194148666 is about 579.0438725738.

The spelling of 194148666 in words is "one hundred ninety-four million, one hundred forty-eight thousand, six hundred sixty-six".