18019741 has 8 divisors (see below), whose sum is σ = 19016640. Its totient is φ = 17040672.

The previous prime is 18019739. The next prime is 18019789. The reversal of 18019741 is 14791081.

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 18019741 - 2¹ = 18019739 is a prime.

It is a super-2 number, since 2×18019741² = 649422131414162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18013741) 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, 2355 + ... + 6448.

It is an arithmetic number, because the mean of its divisors is an integer number (2377080).

Almost surely, 2^18019741 is an apocalyptic number.

It is an amenable number.

18019741 is a deficient number, since it is larger than the sum of its proper divisors (996899).

18019741 is an equidigital number, since it uses as much as digits as its factorization.

18019741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8915.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 18019741 is about 4244.9665487492. The cubic root of 18019741 is about 262.1699119283.

The spelling of 18019741 in words is "eighteen million, nineteen thousand, seven hundred forty-one".