1641021674 has 8 divisors (see below), whose sum is σ = 2462220228. Its totient is φ = 820281600.

The previous prime is 1641021617. The next prime is 1641021709. The reversal of 1641021674 is 4761201461.

It can be written as a sum of positive squares in 2 ways, for example, as 1028805625 + 612216049 = 32075^2 + 24743^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1641021674.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105527 + ... + 120074.

Almost surely, 2^1641021674 is an apocalyptic number.

1641021674 is a deficient number, since it is larger than the sum of its proper divisors (821198554).

1641021674 is a wasteful number, since it uses less digits than its factorization.

1641021674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229240.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1641021674 is about 40509.5257192676. The cubic root of 1641021674 is about 1179.5185419738.

The spelling of 1641021674 in words is "one billion, six hundred forty-one million, twenty-one thousand, six hundred seventy-four".