18414949 has 4 divisors (see below), whose sum is σ = 21045664. Its totient is φ = 15784236.

The previous prime is 18414941. The next prime is 18414953. The reversal of 18414949 is 94941481.

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 a cyclic number.

It is not a de Polignac number, because 18414949 - 2³ = 18414941 is a prime.

It is a super-2 number, since 2×18414949² = 678220693345202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18414941) 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, 1315347 + ... + 1315360.

It is an arithmetic number, because the mean of its divisors is an integer number (5261416).

Almost surely, 2^18414949 is an apocalyptic number.

It is an amenable number.

18414949 is a deficient number, since it is larger than the sum of its proper divisors (2630715).

18414949 is an equidigital number, since it uses as much as digits as its factorization.

18414949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630714.

The product of its digits is 41472, while the sum is 40.

The square root of 18414949 is about 4291.2642659244. The cubic root of 18414949 is about 264.0727005548.

The spelling of 18414949 in words is "eighteen million, four hundred fourteen thousand, nine hundred forty-nine".