19018242 has 12 divisors (see below), whose sum is σ = 41206230. Its totient is φ = 6339408.

The previous prime is 19018201. The next prime is 19018243. The reversal of 19018242 is 24281091.

It can be written as a sum of positive squares in only one way, i.e., 18224361 + 793881 = 4269^2 + 891^2 .

It is not an unprimeable number, because it can be changed into a prime (19018243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 528267 + ... + 528302.

Almost surely, 2^19018242 is an apocalyptic number.

19018242 is an abundant number, since it is smaller than the sum of its proper divisors (22187988).

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

19018242 is a wasteful number, since it uses less digits than its factorization.

19018242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056577 (or 1056574 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 19018242 is about 4360.9909424350. The cubic root of 19018242 is about 266.9255357719.

The spelling of 19018242 in words is "nineteen million, eighteen thousand, two hundred forty-two".