18965229 has 8 divisors (see below), whose sum is σ = 25428960. Its totient is φ = 12572496.

The previous prime is 18965227. The next prime is 18965257. The reversal of 18965229 is 92256981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18965229 - 2¹ = 18965227 is a prime.

It is a super-2 number, since 2×18965229² = 719359822044882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18965227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17122 + ... + 18195.

It is an arithmetic number, because the mean of its divisors is an integer number (3178620).

Almost surely, 2^18965229 is an apocalyptic number.

It is an amenable number.

18965229 is a deficient number, since it is larger than the sum of its proper divisors (6463731).

18965229 is a wasteful number, since it uses less digits than its factorization.

18965229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35499.

The product of its digits is 77760, while the sum is 42.

The square root of 18965229 is about 4354.9086098333. The cubic root of 18965229 is about 266.6772882922.

The spelling of 18965229 in words is "eighteen million, nine hundred sixty-five thousand, two hundred twenty-nine".