1641421131 has 16 divisors (see below), whose sum is σ = 2505408000. Its totient is φ = 936381888.

The previous prime is 1641421129. The next prime is 1641421147. The reversal of 1641421131 is 1311241461.

It is a happy number.

It is not a de Polignac number, because 1641421131 - 2¹ = 1641421129 is a prime.

It is a super-2 number, since 2×1641421131² = 5388526658586638322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1641421181) 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, 52666 + ... + 77823.

It is an arithmetic number, because the mean of its divisors is an integer number (156588000).

Almost surely, 2^1641421131 is an apocalyptic number.

1641421131 is a deficient number, since it is larger than the sum of its proper divisors (863986869).

1641421131 is a wasteful number, since it uses less digits than its factorization.

1641421131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131098.

The product of its digits is 576, while the sum is 24.

The square root of 1641421131 is about 40514.4558275191. The cubic root of 1641421131 is about 1179.6142402250.

Adding to 1641421131 its reverse (1311241461), we get a palindrome (2952662592).

The spelling of 1641421131 in words is "one billion, six hundred forty-one million, four hundred twenty-one thousand, one hundred thirty-one".