18069737 has 4 divisors (see below), whose sum is σ = 20651136. Its totient is φ = 15488340.

The previous prime is 18069731. The next prime is 18069769. The reversal of 18069737 is 73796081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18069737 - 2⁴ = 18069721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18069694 and 18069703.

It is not an unprimeable number, because it can be changed into a prime (18069731) 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 3 ways as a sum of consecutive naturals, for example, 1290689 + ... + 1290702.

It is an arithmetic number, because the mean of its divisors is an integer number (5162784).

Almost surely, 2^18069737 is an apocalyptic number.

It is an amenable number.

18069737 is a deficient number, since it is larger than the sum of its proper divisors (2581399).

18069737 is an equidigital number, since it uses as much as digits as its factorization.

18069737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581398.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 18069737 is about 4250.8513264992. The cubic root of 18069737 is about 262.4121526151.

The spelling of 18069737 in words is "eighteen million, sixty-nine thousand, seven hundred thirty-seven".