2343640778 has 8 divisors (see below), whose sum is σ = 3518777700. Its totient is φ = 1170714880.

The previous prime is 2343640753. The next prime is 2343640787. The reversal of 2343640778 is 8770463432.

2343640778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2199328609 + 144312169 = 46897^2 + 12013^2 .

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, 550103 + ... + 554346.

Almost surely, 2^2343640778 is an apocalyptic number.

2343640778 is a deficient number, since it is larger than the sum of its proper divisors (1175136922).

2343640778 is a wasteful number, since it uses less digits than its factorization.

2343640778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105512.

The product of its (nonzero) digits is 677376, while the sum is 44.

The square root of 2343640778 is about 48411.1637744849. The cubic root of 2343640778 is about 1328.3025772565.

The spelling of 2343640778 in words is "two billion, three hundred forty-three million, six hundred forty thousand, seven hundred seventy-eight".