1985168908 has 24 divisors (see below), whose sum is σ = 3505559904. Its totient is φ = 983606400.

The previous prime is 1985168839. The next prime is 1985168909. The reversal of 1985168908 is 8098615891.

It is not an unprimeable number, because it can be changed into a prime (1985168909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342918 + ... + 348658.

It is an arithmetic number, because the mean of its divisors is an integer number (146064996).

Almost surely, 2^1985168908 is an apocalyptic number.

It is an amenable number.

1985168908 is a deficient number, since it is larger than the sum of its proper divisors (1520390996).

1985168908 is a wasteful number, since it uses less digits than its factorization.

1985168908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6513 (or 6511 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 55.

The square root of 1985168908 is about 44555.2343501861. The cubic root of 1985168908 is about 1256.7989856927.

The spelling of 1985168908 in words is "one billion, nine hundred eighty-five million, one hundred sixty-eight thousand, nine hundred eight".