18124739 has 8 divisors (see below), whose sum is σ = 19355520. Its totient is φ = 16934400.

The previous prime is 18124699. The next prime is 18124763. The reversal of 18124739 is 93742181.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18124739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18124699 and 18124708.

It is not an unprimeable number, because it can be changed into a prime (18124789) 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, 9182 + ... + 10979.

It is an arithmetic number, because the mean of its divisors is an integer number (2419440).

Almost surely, 2^18124739 is an apocalyptic number.

18124739 is a deficient number, since it is larger than the sum of its proper divisors (1230781).

18124739 is a wasteful number, since it uses less digits than its factorization.

18124739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20221.

The product of its digits is 12096, while the sum is 35.

The square root of 18124739 is about 4257.3159384758. The cubic root of 18124739 is about 262.6781327575.

The spelling of 18124739 in words is "eighteen million, one hundred twenty-four thousand, seven hundred thirty-nine".