2246667778 has 8 divisors (see below), whose sum is σ = 3382168572. Its totient is φ = 1119278256.

The previous prime is 2246667767. The next prime is 2246667791. The reversal of 2246667778 is 8777666422.

It can be written as a sum of positive squares in 2 ways, for example, as 2188649089 + 58018689 = 46783^2 + 7617^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2246667778² = 10095032209406914568, which contains 22 as substring.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2027125 + ... + 2028232.

Almost surely, 2^2246667778 is an apocalyptic number.

2246667778 is a deficient number, since it is larger than the sum of its proper divisors (1135500794).

2246667778 is a wasteful number, since it uses less digits than its factorization.

2246667778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4055636.

The product of its digits is 9483264, while the sum is 55.

The square root of 2246667778 is about 47399.0271841100. The cubic root of 2246667778 is about 1309.7234966021.

The spelling of 2246667778 in words is "two billion, two hundred forty-six million, six hundred sixty-seven thousand, seven hundred seventy-eight".