18941229 has 8 divisors (see below), whose sum is σ = 28061120. Its totient is φ = 12627468.

The previous prime is 18941227. The next prime is 18941231. The reversal of 18941229 is 92214981.

It is an interprime number because it is at equal distance from previous prime (18941227) and next prime (18941231).

It is not a de Polignac number, because 18941229 - 2¹ = 18941227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18941193 and 18941202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18941227) 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, 350737 + ... + 350790.

It is an arithmetic number, because the mean of its divisors is an integer number (3507640).

Almost surely, 2^18941229 is an apocalyptic number.

It is an amenable number.

18941229 is a deficient number, since it is larger than the sum of its proper divisors (9119891).

18941229 is an equidigital number, since it uses as much as digits as its factorization.

18941229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701536 (or 701530 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 18941229 is about 4352.1522261980. The cubic root of 18941229 is about 266.5647497688.

The spelling of 18941229 in words is "eighteen million, nine hundred forty-one thousand, two hundred twenty-nine".