2281622578 has 4 divisors (see below), whose sum is σ = 3422433870. Its totient is φ = 1140811288.

The previous prime is 2281622549. The next prime is 2281622633. The reversal of 2281622578 is 8752261822.

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

It can be written as a sum of positive squares in only one way, i.e., 2162529009 + 119093569 = 46503^2 + 10913^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570405643 + ... + 570405646.

Almost surely, 2^2281622578 is an apocalyptic number.

2281622578 is a deficient number, since it is larger than the sum of its proper divisors (1140811292).

2281622578 is a wasteful number, since it uses less digits than its factorization.

2281622578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140811291.

The product of its digits is 215040, while the sum is 43.

The square root of 2281622578 is about 47766.3331018825. Note that the first 3 decimals coincide. The cubic root of 2281622578 is about 1316.4810192846.

The spelling of 2281622578 in words is "two billion, two hundred eighty-one million, six hundred twenty-two thousand, five hundred seventy-eight".