18129037 has 8 divisors (see below), whose sum is σ = 18997056. Its totient is φ = 17267712.

The previous prime is 18128993. The next prime is 18129071. The reversal of 18129037 is 73092181.

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

It is a cyclic number.

It is not a de Polignac number, because 18129037 - 2¹¹ = 18126989 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 (18129077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4378 + ... + 7444.

It is an arithmetic number, because the mean of its divisors is an integer number (2374632).

Almost surely, 2^18129037 is an apocalyptic number.

It is an amenable number.

18129037 is a deficient number, since it is larger than the sum of its proper divisors (868019).

18129037 is a wasteful number, since it uses less digits than its factorization.

18129037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3347.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 18129037 is about 4257.8206866894. The cubic root of 18129037 is about 262.6988944613.

The spelling of 18129037 in words is "eighteen million, one hundred twenty-nine thousand, thirty-seven".