18483397 has 4 divisors (see below), whose sum is σ = 18495360. Its totient is φ = 18471436.

The previous prime is 18483391. The next prime is 18483407. The reversal of 18483397 is 79338481.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79338481 = 137 ⋅579113.

It is a cyclic number.

It is not a de Polignac number, because 18483397 - 2¹⁵ = 18450629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18483391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3247 + ... + 6892.

It is an arithmetic number, because the mean of its divisors is an integer number (4623840).

Almost surely, 2^18483397 is an apocalyptic number.

It is an amenable number.

18483397 is a deficient number, since it is larger than the sum of its proper divisors (11963).

18483397 is a wasteful number, since it uses less digits than its factorization.

18483397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11962.

The product of its digits is 145152, while the sum is 43.

The square root of 18483397 is about 4299.2321407433. The cubic root of 18483397 is about 264.3994803398.

The spelling of 18483397 in words is "eighteen million, four hundred eighty-three thousand, three hundred ninety-seven".