18483949 has 4 divisors (see below), whose sum is σ = 20164320. Its totient is φ = 16803580.

The previous prime is 18483943. The next prime is 18484003. The reversal of 18483949 is 94938481.

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: 94938481 = 11 ⋅8630771.

It is a cyclic number.

It is not a de Polignac number, because 18483949 - 2⁵ = 18483917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18483899 and 18483908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18483943) 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, 840169 + ... + 840190.

It is an arithmetic number, because the mean of its divisors is an integer number (5041080).

Almost surely, 2^18483949 is an apocalyptic number.

It is an amenable number.

18483949 is a deficient number, since it is larger than the sum of its proper divisors (1680371).

18483949 is a wasteful number, since it uses less digits than its factorization.

18483949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680370.

The product of its digits is 248832, while the sum is 46.

The square root of 18483949 is about 4299.2963377744. The cubic root of 18483949 is about 264.4021123787.

The spelling of 18483949 in words is "eighteen million, four hundred eighty-three thousand, nine hundred forty-nine".