1998144162 has 48 divisors (see below), whose sum is σ = 5003406720. Its totient is φ = 564480576.

The previous prime is 1998144157. The next prime is 1998144199. The reversal of 1998144162 is 2614418991.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77878 + ... + 100305.

It is an arithmetic number, because the mean of its divisors is an integer number (104237640).

Almost surely, 2^1998144162 is an apocalyptic number.

1998144162 is an abundant number, since it is smaller than the sum of its proper divisors (3005262558).

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

1998144162 is a wasteful number, since it uses less digits than its factorization.

1998144162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178287 (or 178284 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 1998144162 is about 44700.6058348206. The cubic root of 1998144162 is about 1259.5312277353.

The spelling of 1998144162 in words is "one billion, nine hundred ninety-eight million, one hundred forty-four thousand, one hundred sixty-two".