1641348040 has 16 divisors (see below), whose sum is σ = 3693033180. Its totient is φ = 656539200.

The previous prime is 1641347999. The next prime is 1641348073. The reversal of 1641348040 is 408431461.

It can be written as a sum of positive squares in 2 ways, for example, as 1539620644 + 101727396 = 39238^2 + 10086^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1641347993 and 1641348011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20516811 + ... + 20516890.

Almost surely, 2^1641348040 is an apocalyptic number.

1641348040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1641348040 is an abundant number, since it is smaller than the sum of its proper divisors (2051685140).

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

1641348040 is a wasteful number, since it uses less digits than its factorization.

1641348040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41033712 (or 41033708 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 1641348040 is about 40513.5537814199. The cubic root of 1641348040 is about 1179.5967309130.

The spelling of 1641348040 in words is "one billion, six hundred forty-one million, three hundred forty-eight thousand, forty".