1641313686 has 8 divisors (see below), whose sum is σ = 3282627384. Its totient is φ = 547104560.

The previous prime is 1641313669. The next prime is 1641313691. The reversal of 1641313686 is 6863131461.

It is a sphenic number, since it is the product of 3 distinct primes.

1641313686 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136776135 + ... + 136776146.

It is an arithmetic number, because the mean of its divisors is an integer number (410328423).

Almost surely, 2^1641313686 is an apocalyptic number.

1641313686 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1641313686 is a wasteful number, since it uses less digits than its factorization.

1641313686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273552286.

The product of its digits is 62208, while the sum is 39.

The square root of 1641313686 is about 40513.1297976347. The cubic root of 1641313686 is about 1179.5885010621.

The spelling of 1641313686 in words is "one billion, six hundred forty-one million, three hundred thirteen thousand, six hundred eighty-six".