1641155852 has 12 divisors (see below), whose sum is σ = 3282311760. Its totient is φ = 703352496.

The previous prime is 1641155833. The next prime is 1641155899. The reversal of 1641155852 is 2585511461.

1641155852 is an admirable 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, 29306327 + ... + 29306382.

It is an arithmetic number, because the mean of its divisors is an integer number (273525980).

Almost surely, 2^1641155852 is an apocalyptic number.

It is an amenable number.

1641155852 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.

1641155852 is a wasteful number, since it uses less digits than its factorization.

1641155852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58612720 (or 58612718 counting only the distinct ones).

The product of its digits is 48000, while the sum is 38.

The square root of 1641155852 is about 40511.1818144077. The cubic root of 1641155852 is about 1179.5506888427.

The spelling of 1641155852 in words is "one billion, six hundred forty-one million, one hundred fifty-five thousand, eight hundred fifty-two".