2226693778 has 4 divisors (see below), whose sum is σ = 3340040670. Its totient is φ = 1113346888.

The previous prime is 2226693739. The next prime is 2226693817. The reversal of 2226693778 is 8773966222.

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

It is an interprime number because it is at equal distance from previous prime (2226693739) and next prime (2226693817).

It can be written as a sum of positive squares in only one way, i.e., 1488647889 + 738045889 = 38583^2 + 27167^2 .

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 as a sum of consecutive naturals, namely, 556673443 + ... + 556673446.

Almost surely, 2^2226693778 is an apocalyptic number.

2226693778 is a deficient number, since it is larger than the sum of its proper divisors (1113346892).

2226693778 is a wasteful number, since it uses less digits than its factorization.

2226693778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113346891.

The product of its digits is 3048192, while the sum is 52.

The square root of 2226693778 is about 47187.8562556088. The cubic root of 2226693778 is about 1305.8305714182.

The spelling of 2226693778 in words is "two billion, two hundred twenty-six million, six hundred ninety-three thousand, seven hundred seventy-eight".