18313929 has 12 divisors (see below), whose sum is σ = 27846000. Its totient is φ = 11566584.

The previous prime is 18313907. The next prime is 18313949. The reversal of 18313929 is 92931381.

It is not a de Polignac number, because 18313929 - 2¹³ = 18305737 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18313893 and 18313902.

It is not an unprimeable number, because it can be changed into a prime (18313949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53379 + ... + 53720.

It is an arithmetic number, because the mean of its divisors is an integer number (2320500).

Almost surely, 2^18313929 is an apocalyptic number.

18313929 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

18313929 is a deficient number, since it is larger than the sum of its proper divisors (9532071).

18313929 is a wasteful number, since it uses less digits than its factorization.

18313929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107124 (or 107121 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 18313929 is about 4279.4776550416. The cubic root of 18313929 is about 263.5889350021.

The spelling of 18313929 in words is "eighteen million, three hundred thirteen thousand, nine hundred twenty-nine".