1641878233 has 8 divisors (see below), whose sum is σ = 1654358400. Its totient is φ = 1629417840.

The previous prime is 1641878221. The next prime is 1641878261. The reversal of 1641878233 is 3328781461.

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

It is a cyclic number.

It is not a de Polignac number, because 1641878233 - 2⁵ = 1641878201 is a prime.

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 1641878233.

It is not an unprimeable number, because it can be changed into a prime (1641878633) 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, 190528 + ... + 198958.

It is an arithmetic number, because the mean of its divisors is an integer number (206794800).

Almost surely, 2^1641878233 is an apocalyptic number.

It is an amenable number.

1641878233 is a deficient number, since it is larger than the sum of its proper divisors (12480167).

1641878233 is a wasteful number, since it uses less digits than its factorization.

1641878233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9887.

The product of its digits is 193536, while the sum is 43.

The square root of 1641878233 is about 40520.0966558571. The cubic root of 1641878233 is about 1179.7237294909.

The spelling of 1641878233 in words is "one billion, six hundred forty-one million, eight hundred seventy-eight thousand, two hundred thirty-three".