18957037 has 8 divisors (see below), whose sum is σ = 21579840. Its totient is φ = 16484160.

The previous prime is 18957017. The next prime is 18957053. The reversal of 18957037 is 73075981.

It is the 1778-th star number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-18957037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18957017) 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 in 7 ways as a sum of consecutive naturals, for example, 37212 + ... + 37717.

It is an arithmetic number, because the mean of its divisors is an integer number (2697480).

Almost surely, 2^18957037 is an apocalyptic number.

It is an amenable number.

18957037 is a deficient number, since it is larger than the sum of its proper divisors (2622803).

18957037 is a wasteful number, since it uses less digits than its factorization.

18957037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74963.

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

The square root of 18957037 is about 4353.9679603782. The cubic root of 18957037 is about 266.6388858212.

The spelling of 18957037 in words is "eighteen million, nine hundred fifty-seven thousand, thirty-seven".