1998303166 has 8 divisors (see below), whose sum is σ = 2998975320. Its totient is φ = 998644728.

The previous prime is 1998303157. The next prime is 1998303239. The reversal of 1998303166 is 6613038991.

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

It is a congruent number.

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, 248481 + ... + 256396.

It is an arithmetic number, because the mean of its divisors is an integer number (374871915).

Almost surely, 2^1998303166 is an apocalyptic number.

1998303166 is a deficient number, since it is larger than the sum of its proper divisors (1000672154).

1998303166 is a wasteful number, since it uses less digits than its factorization.

1998303166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506858.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 1998303166 is about 44702.3843435672. The cubic root of 1998303166 is about 1259.5646362676.

The spelling of 1998303166 in words is "one billion, nine hundred ninety-eight million, three hundred three thousand, one hundred sixty-six".