18550741 has 8 divisors (see below), whose sum is σ = 20890368. Its totient is φ = 16320000.

The previous prime is 18550739. The next prime is 18550751. The reversal of 18550741 is 14705581.

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

It is a 5-Lehmer number, since φ(18550741) divides (18550741-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 18550741 - 2¹ = 18550739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18550711) 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, 26860 + ... + 27541.

It is an arithmetic number, because the mean of its divisors is an integer number (2611296).

Almost surely, 2^18550741 is an apocalyptic number.

18550741 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18550741 is a deficient number, since it is larger than the sum of its proper divisors (2339627).

18550741 is a wasteful number, since it uses less digits than its factorization.

18550741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54443.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 18550741 is about 4307.0571159436. The cubic root of 18550741 is about 264.7202030819.

It can be divided in two parts, 18550 and 741, that added together give a palindrome (19291).

The spelling of 18550741 in words is "eighteen million, five hundred fifty thousand, seven hundred forty-one".