1778228089 has 8 divisors (see below), whose sum is σ = 1940821920. Its totient is φ = 1615790400.

The previous prime is 1778228087. The next prime is 1778228093. The reversal of 1778228089 is 9808228771.

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 1778228089 - 2¹ = 1778228087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1778228083) 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, 14547 + ... + 61384.

It is an arithmetic number, because the mean of its divisors is an integer number (242602740).

Almost surely, 2^1778228089 is an apocalyptic number.

It is an amenable number.

1778228089 is a deficient number, since it is larger than the sum of its proper divisors (162593831).

1778228089 is a wasteful number, since it uses less digits than its factorization.

1778228089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78071.

The product of its (nonzero) digits is 903168, while the sum is 52.

The square root of 1778228089 is about 42169.0418316565. The cubic root of 1778228089 is about 1211.5160036442.

The spelling of 1778228089 in words is "one billion, seven hundred seventy-eight million, two hundred twenty-eight thousand, eighty-nine".