1641423216 has 40 divisors (see below), whose sum is σ = 4377132544. Its totient is φ = 529490880.

The previous prime is 1641423209. The next prime is 1641423269. The reversal of 1641423216 is 6123241461.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550066 + ... + 553041.

Almost surely, 2^1641423216 is an apocalyptic number.

1641423216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1641423216 is an abundant number, since it is smaller than the sum of its proper divisors (2735709328).

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

1641423216 is a wasteful number, since it uses less digits than its factorization.

1641423216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103149 (or 1103143 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 1641423216 is about 40514.4815590672. The cubic root of 1641423216 is about 1179.6147396895.

Adding to 1641423216 its reverse (6123241461), we get a palindrome (7764664677).

The spelling of 1641423216 in words is "one billion, six hundred forty-one million, four hundred twenty-three thousand, two hundred sixteen".