2278512438 has 16 divisors (see below), whose sum is σ = 4563371520. Its totient is φ = 758446376.

The previous prime is 2278512409. The next prime is 2278512473. The reversal of 2278512438 is 8342158722.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2278512438.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259770 + ... + 268397.

It is an arithmetic number, because the mean of its divisors is an integer number (285210720).

Almost surely, 2^2278512438 is an apocalyptic number.

2278512438 is an abundant number, since it is smaller than the sum of its proper divisors (2284859082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2278512438 is a wasteful number, since it uses less digits than its factorization.

2278512438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528891.

The product of its digits is 215040, while the sum is 42.

The square root of 2278512438 is about 47733.7662247596. The cubic root of 2278512438 is about 1315.8825705986.

The spelling of 2278512438 in words is "two billion, two hundred seventy-eight million, five hundred twelve thousand, four hundred thirty-eight".