4234687778 has 8 divisors (see below), whose sum is σ = 6352465068. Its totient is φ = 2117199424.

The previous prime is 4234687759. The next prime is 4234687781. The reversal of 4234687778 is 8777864324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3857279449 + 377408329 = 62107^2 + 19427^2 .

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

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, 30851 + ... + 97062.

Almost surely, 2^4234687778 is an apocalyptic number.

4234687778 is a deficient number, since it is larger than the sum of its proper divisors (2117777290).

4234687778 is a wasteful number, since it uses less digits than its factorization.

4234687778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144468.

The product of its digits is 12644352, while the sum is 56.

The square root of 4234687778 is about 65074.4786994103. The cubic root of 4234687778 is about 1617.8582398951.

The spelling of 4234687778 in words is "four billion, two hundred thirty-four million, six hundred eighty-seven thousand, seven hundred seventy-eight".