2271826978 has 16 divisors (see below), whose sum is σ = 3616176960. Its totient is φ = 1068108976.

The previous prime is 2271826957. The next prime is 2271826987. The reversal of 2271826978 is 8796281722.

It is a happy number.

It is a super-2 number, since 2×2271826978² = 10322395635937224968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415825 + ... + 421252.

It is an arithmetic number, because the mean of its divisors is an integer number (226011060).

Almost surely, 2^2271826978 is an apocalyptic number.

2271826978 is a deficient number, since it is larger than the sum of its proper divisors (1344349982).

2271826978 is a wasteful number, since it uses less digits than its factorization.

2271826978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837161.

The product of its digits is 1354752, while the sum is 52.

The square root of 2271826978 is about 47663.6861562343. The cubic root of 2271826978 is about 1314.5943180340.

The spelling of 2271826978 in words is "two billion, two hundred seventy-one million, eight hundred twenty-six thousand, nine hundred seventy-eight".