1641213 has 24 divisors (see below), whose sum is σ = 2745600. Its totient is φ = 925344.

The previous prime is 1641161. The next prime is 1641217. The reversal of 1641213 is 3121461.

It is a happy number.

1641213 is a `hidden beast` number, since 1 + 641 + 21 + 3 = 666.

It is not a de Polignac number, because 1641213 - 2⁹ = 1640701 is a prime.

It is a super-2 number, since 2×1641213² = 5387160222738, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6748 + ... + 6986.

It is an arithmetic number, because the mean of its divisors is an integer number (114400).

2^1641213 is an apocalyptic number.

It is an amenable number.

1641213 is a deficient number, since it is larger than the sum of its proper divisors (1104387).

1641213 is a wasteful number, since it uses less digits than its factorization.

1641213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 358 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1641213 is about 1281.0983568798. The cubic root of 1641213 is about 117.9564380043.

Adding to 1641213 its reverse (3121461), we get a palindrome (4762674).

The spelling of 1641213 in words is "one million, six hundred forty-one thousand, two hundred thirteen".