1018541 has 4 divisors (see below), whose sum is σ = 1042272. Its totient is φ = 994812.

The previous prime is 1018513. The next prime is 1018543. The reversal of 1018541 is 1458101.

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.

It is a cyclic number.

It is not a de Polignac number, because 1018541 - 2⁶ = 1018477 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018543) 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, 11801 + ... + 11886.

It is an arithmetic number, because the mean of its divisors is an integer number (260568).

2^1018541 is an apocalyptic number.

It is an amenable number.

1018541 is a deficient number, since it is larger than the sum of its proper divisors (23731).

1018541 is an equidigital number, since it uses as much as digits as its factorization.

1018541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23730.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 1018541 is about 1009.2279227211. The cubic root of 1018541 is about 100.6142525461.

It can be divided in two parts, 101 and 8541, that multiplied together give a triangular number (862641 = T₁₃₁₃).

The spelling of 1018541 in words is "one million, eighteen thousand, five hundred forty-one".