18696037 has 4 divisors (see below), whose sum is σ = 18760140. Its totient is φ = 18631936.

The previous prime is 18696023. The next prime is 18696049. The reversal of 18696037 is 73069681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73069681 = 167 ⋅437543.

It can be written as a sum of positive squares in 2 ways, for example, as 7845601 + 10850436 = 2801^2 + 3294^2 .

It is a cyclic number.

It is not a de Polignac number, because 18696037 - 2¹⁹ = 18171749 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18696017) 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, 31612 + ... + 32197.

It is an arithmetic number, because the mean of its divisors is an integer number (4690035).

Almost surely, 2^18696037 is an apocalyptic number.

It is an amenable number.

18696037 is a deficient number, since it is larger than the sum of its proper divisors (64103).

18696037 is an equidigital number, since it uses as much as digits as its factorization.

18696037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64102.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 18696037 is about 4323.8914186182. The cubic root of 18696037 is about 265.4095340945.

The spelling of 18696037 in words is "eighteen million, six hundred ninety-six thousand, thirty-seven".