1018641 has 8 divisors (see below), whose sum is σ = 1462720. Its totient is φ = 626832.

The previous prime is 1018621. The next prime is 1018643. The reversal of 1018641 is 1468101.

1018641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1018641 - 2⁷ = 1018513 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1018643) 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, 13021 + ... + 13098.

It is an arithmetic number, because the mean of its divisors is an integer number (182840).

2^1018641 is an apocalyptic number.

It is an amenable number.

1018641 is a deficient number, since it is larger than the sum of its proper divisors (444079).

1018641 is a wasteful number, since it uses less digits than its factorization.

1018641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26135.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 1018641 is about 1009.2774643278. The cubic root of 1018641 is about 100.6175451957.

The spelling of 1018641 in words is "one million, eighteen thousand, six hundred forty-one".