18975037 has 2 divisors, whose sum is σ = 18975038. Its totient is φ = 18975036.

The previous prime is 18975017. The next prime is 18975079. The reversal of 18975037 is 73057981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10278436 + 8696601 = 3206^2 + 2949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18975037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18975017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9487518 + 9487519.

It is an arithmetic number, because the mean of its divisors is an integer number (9487519).

Almost surely, 2^18975037 is an apocalyptic number.

It is an amenable number.

18975037 is a deficient number, since it is larger than the sum of its proper divisors (1).

18975037 is an equidigital number, since it uses as much as digits as its factorization.

18975037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 18975037 is about 4356.0345499089. The cubic root of 18975037 is about 266.7232517074.

The spelling of 18975037 in words is "eighteen million, nine hundred seventy-five thousand, thirty-seven".