1641212210 has 32 divisors (see below), whose sum is σ = 3392366400. Its totient is φ = 565392960.

The previous prime is 1641212201. The next prime is 1641212213. The reversal of 1641212210 is 122121461.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1641212213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390545 + ... + 394724.

It is an arithmetic number, because the mean of its divisors is an integer number (106011450).

Almost surely, 2^1641212210 is an apocalyptic number.

1641212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1641212210 is an abundant number, since it is smaller than the sum of its proper divisors (1751154190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1641212210 is a wasteful number, since it uses less digits than its factorization.

1641212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785306.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1641212210 is about 40511.8773941668. The cubic root of 1641212210 is about 1179.5641907813.

Adding to 1641212210 its reverse (122121461), we get a palindrome (1763333671).

The spelling of 1641212210 in words is "one billion, six hundred forty-one million, two hundred twelve thousand, two hundred ten".