18349460 has 48 divisors (see below), whose sum is σ = 42230160. Its totient is φ = 6666240.

The previous prime is 18349439. The next prime is 18349481. The reversal of 18349460 is 6494381.

It is an interprime number because it is at equal distance from previous prime (18349439) and next prime (18349481).

It can be written as a sum of positive squares in 8 ways, for example, as 1473796 + 16875664 = 1214^2 + 4108^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18349460.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8930 + ... + 10790.

It is an arithmetic number, because the mean of its divisors is an integer number (879795).

Almost surely, 2^18349460 is an apocalyptic number.

18349460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18349460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21115080).

18349460 is an abundant number, since it is smaller than the sum of its proper divisors (23880700).

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

18349460 is a wasteful number, since it uses less digits than its factorization.

18349460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916 (or 1914 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 18349460 is about 4283.6269678860. The cubic root of 18349460 is about 263.7592885478.

The spelling of 18349460 in words is "eighteen million, three hundred forty-nine thousand, four hundred sixty".