1994147066 has 8 divisors (see below), whose sum is σ = 3013054740. Its totient is φ = 989795488.

The previous prime is 1994147041. The next prime is 1994147087. The reversal of 1994147066 is 6607414991.

It can be written as a sum of positive squares in 2 ways, for example, as 1703955841 + 290191225 = 41279^2 + 17035^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1994147066.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3638681 + ... + 3639228.

Almost surely, 2^1994147066 is an apocalyptic number.

1994147066 is a deficient number, since it is larger than the sum of its proper divisors (1018907674).

1994147066 is a wasteful number, since it uses less digits than its factorization.

1994147066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7278048.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 1994147066 is about 44655.8738129711. The cubic root of 1994147066 is about 1258.6908099027.

The spelling of 1994147066 in words is "one billion, nine hundred ninety-four million, one hundred forty-seven thousand, sixty-six".