18872741 has 4 divisors (see below), whose sum is σ = 18883872. Its totient is φ = 18861612.

The previous prime is 18872677. The next prime is 18872753. The reversal of 18872741 is 14727881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 18872741 - 2⁶ = 18872677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18872695 and 18872704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18872041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2435 + ... + 6608.

It is an arithmetic number, because the mean of its divisors is an integer number (4720968).

Almost surely, 2^18872741 is an apocalyptic number.

It is an amenable number.

18872741 is a deficient number, since it is larger than the sum of its proper divisors (11131).

18872741 is an equidigital number, since it uses as much as digits as its factorization.

18872741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11130.

The product of its digits is 25088, while the sum is 38.

The square root of 18872741 is about 4344.2768097809. The cubic root of 18872741 is about 266.2430787212.

The spelling of 18872741 in words is "eighteen million, eight hundred seventy-two thousand, seven hundred forty-one".