18069836 has 24 divisors (see below), whose sum is σ = 33752880. Its totient is φ = 8439552.

The previous prime is 18069823. The next prime is 18069841. The reversal of 18069836 is 63896081.

It is a happy number.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18069793 and 18069802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3920 + ... + 7176.

It is an arithmetic number, because the mean of its divisors is an integer number (1406370).

Almost surely, 2^18069836 is an apocalyptic number.

It is an amenable number.

18069836 is a deficient number, since it is larger than the sum of its proper divisors (15683044).

18069836 is a wasteful number, since it uses less digits than its factorization.

18069836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353 (or 3351 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 18069836 is about 4250.8629712095. The cubic root of 18069836 is about 262.4126318465.

The spelling of 18069836 in words is "eighteen million, sixty-nine thousand, eight hundred thirty-six".