1641268 has 6 divisors (see below), whose sum is σ = 2872226. Its totient is φ = 820632.

The previous prime is 1641253. The next prime is 1641281. The reversal of 1641268 is 8621461.

It can be written as a sum of positive squares in only one way, i.e., 1340964 + 300304 = 1158^2 + 548^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205155 + ... + 205162.

2^1641268 is an apocalyptic number.

It is an amenable number.

1641268 is a deficient number, since it is larger than the sum of its proper divisors (1230958).

1641268 is a wasteful number, since it uses less digits than its factorization.

1641268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410321 (or 410319 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 1641268 is about 1281.1198226552. The cubic root of 1641268 is about 117.9577556337.

The spelling of 1641268 in words is "one million, six hundred forty-one thousand, two hundred sixty-eight".