1641880327 has 4 divisors (see below), whose sum is σ = 1698496920. Its totient is φ = 1585263736.

The previous prime is 1641880283. The next prime is 1641880343. The reversal of 1641880327 is 7230881461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7230881461 = 69661 ⋅103801.

It is a cyclic number.

It is not a de Polignac number, because 1641880327 - 2²⁷ = 1507662599 is a prime.

It is a super-3 number, since 3×1641880327³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1641880327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641880367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28308253 + ... + 28308310.

It is an arithmetic number, because the mean of its divisors is an integer number (424624230).

Almost surely, 2^1641880327 is an apocalyptic number.

1641880327 is a deficient number, since it is larger than the sum of its proper divisors (56616593).

1641880327 is an equidigital number, since it uses as much as digits as its factorization.

1641880327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56616592.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1641880327 is about 40520.1224948790. The cubic root of 1641880327 is about 1179.7242310182.

The spelling of 1641880327 in words is "one billion, six hundred forty-one million, eight hundred eighty thousand, three hundred twenty-seven".