1908228668 has 6 divisors (see below), whose sum is σ = 3339400176. Its totient is φ = 954114332.

The previous prime is 1908228643. The next prime is 1908228697. The reversal of 1908228668 is 8668228091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238528580 + ... + 238528587.

It is an arithmetic number, because the mean of its divisors is an integer number (556566696).

Almost surely, 2^1908228668 is an apocalyptic number.

It is an amenable number.

1908228668 is a deficient number, since it is larger than the sum of its proper divisors (1431171508).

1908228668 is a wasteful number, since it uses less digits than its factorization.

1908228668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477057171 (or 477057169 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 1908228668 is about 43683.2767543828. The cubic root of 1908228668 is about 1240.3477753279.

The spelling of 1908228668 in words is "one billion, nine hundred eight million, two hundred twenty-eight thousand, six hundred sixty-eight".