19598642 has 16 divisors (see below), whose sum is σ = 33659712. Its totient is φ = 8383920.

The previous prime is 19598609. The next prime is 19598647. The reversal of 19598642 is 24689591.

It is a junction number, because it is equal to n+sod(n) for n = 19598593 and 19598602.

It is not an unprimeable number, because it can be changed into a prime (19598647) 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 7 ways as a sum of consecutive naturals, for example, 9917 + ... + 11727.

It is an arithmetic number, because the mean of its divisors is an integer number (2103732).

Almost surely, 2^19598642 is an apocalyptic number.

19598642 is a deficient number, since it is larger than the sum of its proper divisors (14061070).

19598642 is a wasteful number, since it uses less digits than its factorization.

19598642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593.

The product of its digits is 155520, while the sum is 44.

The square root of 19598642 is about 4427.0353511125. The cubic root of 19598642 is about 269.6137228968.

It can be divided in two parts, 1959 and 8642, that added together give a palindrome (10601).

The spelling of 19598642 in words is "nineteen million, five hundred ninety-eight thousand, six hundred forty-two".