1641130278 has 8 divisors (see below), whose sum is σ = 3282260568. Its totient is φ = 547043424.

The previous prime is 1641130277. The next prime is 1641130289. The reversal of 1641130278 is 8720311461.

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

1641130278 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641130277) 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, 136760851 + ... + 136760862.

It is an arithmetic number, because the mean of its divisors is an integer number (410282571).

Almost surely, 2^1641130278 is an apocalyptic number.

1641130278 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.

1641130278 is a wasteful number, since it uses less digits than its factorization.

1641130278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273521718.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1641130278 is about 40510.8661719297. The cubic root of 1641130278 is about 1179.5445618629.

The spelling of 1641130278 in words is "one billion, six hundred forty-one million, one hundred thirty thousand, two hundred seventy-eight".