18349448 has 32 divisors (see below), whose sum is σ = 37762200. Its totient is φ = 8306688.

The previous prime is 18349439. The next prime is 18349481. The reversal of 18349448 is 84494381.

It can be written as a sum of positive squares in 4 ways, for example, as 13675204 + 4674244 = 3698^2 + 2162^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3848 + ... + 7176.

Almost surely, 2^18349448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18349448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18881100).

18349448 is an abundant number, since it is smaller than the sum of its proper divisors (19412752).

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

18349448 is a wasteful number, since it uses less digits than its factorization.

18349448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3401 (or 3397 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 18349448 is about 4283.6255672036. The cubic root of 18349448 is about 263.7592310509.

It can be divided in two parts, 18 and 349448, that multiplied together give a square (6290064 = 2508²).

The spelling of 18349448 in words is "eighteen million, three hundred forty-nine thousand, four hundred forty-eight".