18329012 has 12 divisors (see below), whose sum is σ = 34543236. Its totient is φ = 8459520.

The previous prime is 18329011. The next prime is 18329083. The reversal of 18329012 is 21092381.

It can be written as a sum of positive squares in 2 ways, for example, as 6522916 + 11806096 = 2554^2 + 3436^2 .

It is a super-2 number, since 2×18329012² = 671905361792288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18329011) 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, 176189 + ... + 176292.

It is an arithmetic number, because the mean of its divisors is an integer number (2878603).

Almost surely, 2^18329012 is an apocalyptic number.

It is an amenable number.

18329012 is a deficient number, since it is larger than the sum of its proper divisors (16214224).

18329012 is a wasteful number, since it uses less digits than its factorization.

18329012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352498 (or 352496 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 18329012 is about 4281.2395401332. The cubic root of 18329012 is about 263.6612774063.

The spelling of 18329012 in words is "eighteen million, three hundred twenty-nine thousand, twelve".