1228694608 has 20 divisors (see below), whose sum is σ = 2393753908. Its totient is φ = 610951680.

The previous prime is 1228694587. The next prime is 1228694627. The reversal of 1228694608 is 8064968221.

It can be written as a sum of positive squares in 2 ways, for example, as 270668304 + 958026304 = 16452^2 + 30952^2 .

It is a congruent number.

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, 209241 + ... + 215032.

Almost surely, 2^1228694608 is an apocalyptic number.

It is an amenable number.

1228694608 is a deficient number, since it is larger than the sum of its proper divisors (1165059300).

1228694608 is a wasteful number, since it uses less digits than its factorization.

1228694608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424462 (or 424456 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 1228694608 is about 35052.7403778934. The cubic root of 1228694608 is about 1071.0620973473.

The spelling of 1228694608 in words is "one billion, two hundred twenty-eight million, six hundred ninety-four thousand, six hundred eight".