1641147560 has 32 divisors (see below), whose sum is σ = 3976628040. Its totient is φ = 605961984.

The previous prime is 1641147539. The next prime is 1641147569. The reversal of 1641147560 is 657411461.

It can be written as a sum of positive squares in 4 ways, for example, as 887205796 + 753941764 = 29786^2 + 27458^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1641147560.

It is not an unprimeable number, because it can be changed into a prime (1641147569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1577507 + ... + 1578546.

Almost surely, 2^1641147560 is an apocalyptic number.

1641147560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1641147560 is an abundant number, since it is smaller than the sum of its proper divisors (2335480480).

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

1641147560 is a wasteful number, since it uses less digits than its factorization.

1641147560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156077 (or 3156073 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1641147560 is about 40511.0794721642. The cubic root of 1641147560 is about 1179.5487022650.

The spelling of 1641147560 in words is "one billion, six hundred forty-one million, one hundred forty-seven thousand, five hundred sixty".