2278747622 has 4 divisors (see below), whose sum is σ = 3418121436. Its totient is φ = 1139373810.

The previous prime is 2278747621. The next prime is 2278747657. The reversal of 2278747622 is 2267478722.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278747621) by changing a digit.

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 as a sum of consecutive naturals, namely, 569686904 + ... + 569686907.

It is an arithmetic number, because the mean of its divisors is an integer number (854530359).

Almost surely, 2^2278747622 is an apocalyptic number.

2278747622 is a deficient number, since it is larger than the sum of its proper divisors (1139373814).

2278747622 is a wasteful number, since it uses less digits than its factorization.

2278747622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139373813.

The product of its digits is 1053696, while the sum is 47.

The square root of 2278747622 is about 47736.2296584052. The cubic root of 2278747622 is about 1315.9278433936.

The spelling of 2278747622 in words is "two billion, two hundred seventy-eight million, seven hundred forty-seven thousand, six hundred twenty-two".