1608660963 has 144 divisors (see below), whose sum is σ = 3091845120. Its totient is φ = 784308096.

The previous prime is 1608660941. The next prime is 1608661013. The reversal of 1608660963 is 3690668061.

It is not a de Polignac number, because 1608660963 - 2⁹ = 1608660451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1608660763) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 20362758 + ... + 20362836.

Almost surely, 2^1608660963 is an apocalyptic number.

1608660963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1608660963 is a deficient number, since it is larger than the sum of its proper divisors (1483184157).

1608660963 is a wasteful number, since it uses less digits than its factorization.

1608660963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 1608660963 is about 40108.1159243363. The cubic root of 1608660963 is about 1171.7136995442.

The spelling of 1608660963 in words is "one billion, six hundred eight million, six hundred sixty thousand, nine hundred sixty-three".