18593442 has 48 divisors (see below), whose sum is σ = 48071520. Its totient is φ = 5311656.

The previous prime is 18593429. The next prime is 18593447. The reversal of 18593442 is 24439581.

It is a junction number, because it is equal to n+sod(n) for n = 18593397 and 18593406.

It is not an unprimeable number, because it can be changed into a prime (18593447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 868 + ... + 6159.

It is an arithmetic number, because the mean of its divisors is an integer number (1001490).

Almost surely, 2^18593442 is an apocalyptic number.

18593442 is an abundant number, since it is smaller than the sum of its proper divisors (29478078).

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

18593442 is a wasteful number, since it uses less digits than its factorization.

18593442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7052 (or 7039 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 18593442 is about 4312.0113636214. The cubic root of 18593442 is about 264.9231627236.

The spelling of 18593442 in words is "eighteen million, five hundred ninety-three thousand, four hundred forty-two".