18091829 has 12 divisors (see below), whose sum is σ = 21143808. Its totient is φ = 15435000.

The previous prime is 18091813. The next prime is 18091849. The reversal of 18091829 is 92819081.

It is not a de Polignac number, because 18091829 - 2⁴ = 18091813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18091792 and 18091801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18091849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11564 + ... + 13034.

It is an arithmetic number, because the mean of its divisors is an integer number (1761984).

Almost surely, 2^18091829 is an apocalyptic number.

It is an amenable number.

18091829 is a deficient number, since it is larger than the sum of its proper divisors (3051979).

18091829 is a wasteful number, since it uses less digits than its factorization.

18091829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 18091829 is about 4253.4490710481. The cubic root of 18091829 is about 262.5190504693.

The spelling of 18091829 in words is "eighteen million, ninety-one thousand, eight hundred twenty-nine".