18484330 has 16 divisors (see below), whose sum is σ = 33728904. Its totient is φ = 7292160.

The previous prime is 18484309. The next prime is 18484351. The reversal of 18484330 is 3348481.

It is an interprime number because it is at equal distance from previous prime (18484309) and next prime (18484351).

It can be written as a sum of positive squares in 4 ways, for example, as 17214201 + 1270129 = 4149^2 + 1127^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18484292 and 18484301.

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, 11931 + ... + 13390.

Almost surely, 2^18484330 is an apocalyptic number.

18484330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18484330 is a deficient number, since it is larger than the sum of its proper divisors (15244574).

18484330 is a wasteful number, since it uses less digits than its factorization.

18484330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25401.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 18484330 is about 4299.3406471225. The cubic root of 18484330 is about 264.4039290272.

The spelling of 18484330 in words is "eighteen million, four hundred eighty-four thousand, three hundred thirty".