18829749 has 4 divisors (see below), whose sum is σ = 25106336. Its totient is φ = 12553164.

The previous prime is 18829717. The next prime is 18829763. The reversal of 18829749 is 94792881.

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.

It is not a de Polignac number, because 18829749 - 2⁵ = 18829717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18829698 and 18829707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18829799) 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, 3138289 + ... + 3138294.

It is an arithmetic number, because the mean of its divisors is an integer number (6276584).

Almost surely, 2^18829749 is an apocalyptic number.

It is an amenable number.

18829749 is a deficient number, since it is larger than the sum of its proper divisors (6276587).

18829749 is an equidigital number, since it uses as much as digits as its factorization.

18829749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6276586.

The product of its digits is 290304, while the sum is 48.

The square root of 18829749 is about 4339.3258693027. The cubic root of 18829749 is about 266.0407582597.

The spelling of 18829749 in words is "eighteen million, eight hundred twenty-nine thousand, seven hundred forty-nine".