19998162 has 24 divisors (see below), whose sum is σ = 44728320. Its totient is φ = 6450840.

The previous prime is 19998161. The next prime is 19998163. The reversal of 19998162 is 26189991.

It is an interprime number because it is at equal distance from previous prime (19998161) and next prime (19998163).

It is not an unprimeable number, because it can be changed into a prime (19998161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17362 + ... + 18477.

It is an arithmetic number, because the mean of its divisors is an integer number (1863680).

Almost surely, 2^19998162 is an apocalyptic number.

19998162 is an abundant number, since it is smaller than the sum of its proper divisors (24730158).

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

19998162 is a wasteful number, since it uses less digits than its factorization.

19998162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35878 (or 35875 counting only the distinct ones).

The product of its digits is 69984, while the sum is 45.

The square root of 19998162 is about 4471.9304556310. The cubic root of 19998162 is about 271.4334462388.

The spelling of 19998162 in words is "nineteen million, nine hundred ninety-eight thousand, one hundred sixty-two".