18069412 has 6 divisors (see below), whose sum is σ = 31621478. Its totient is φ = 9034704.

The previous prime is 18069371. The next prime is 18069473. The reversal of 18069412 is 21496081.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17438976 + 630436 = 4176^2 + 794^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2258673 + ... + 2258680.

Almost surely, 2^18069412 is an apocalyptic number.

It is an amenable number.

18069412 is a deficient number, since it is larger than the sum of its proper divisors (13552066).

18069412 is a wasteful number, since it uses less digits than its factorization.

18069412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4517357 (or 4517355 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 18069412 is about 4250.8130986906. The cubic root of 18069412 is about 262.4105793685.

It can be divided in two parts, 18069 and 412, that added together give a palindrome (18481).

The spelling of 18069412 in words is "eighteen million, sixty-nine thousand, four hundred twelve".