2278180673 has 8 divisors (see below), whose sum is σ = 2325753000. Its totient is φ = 2230778368.

The previous prime is 2278180649. The next prime is 2278180777. The reversal of 2278180673 is 3760818722.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 383493889 + 1894686784 = 19583^2 + 43528^2 .

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 2278180673 - 2⁶ = 2278180609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2278180633) 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, 15248 + ... + 69201.

It is an arithmetic number, because the mean of its divisors is an integer number (290719125).

Almost surely, 2^2278180673 is an apocalyptic number.

It is an amenable number.

2278180673 is a deficient number, since it is larger than the sum of its proper divisors (47572327).

2278180673 is an equidigital number, since it uses as much as digits as its factorization.

2278180673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85011.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 2278180673 is about 47730.2909377263. The cubic root of 2278180673 is about 1315.8187007152.

The spelling of 2278180673 in words is "two billion, two hundred seventy-eight million, one hundred eighty thousand, six hundred seventy-three".