161908116 has 48 divisors (see below), whose sum is σ = 384975360. Its totient is φ = 52950240.

The previous prime is 161908111. The next prime is 161908121. The reversal of 161908116 is 611809161.

It is an interprime number because it is at equal distance from previous prime (161908111) and next prime (161908121).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161908111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261255 + ... + 261873.

It is an arithmetic number, because the mean of its divisors is an integer number (8020320).

Almost surely, 2^161908116 is an apocalyptic number.

It is an amenable number.

161908116 is an abundant number, since it is smaller than the sum of its proper divisors (223067244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161908116 is a wasteful number, since it uses less digits than its factorization.

161908116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004 (or 1002 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 161908116 is about 12724.3120049769. The cubic root of 161908116 is about 545.0330939700.

The spelling of 161908116 in words is "one hundred sixty-one million, nine hundred eight thousand, one hundred sixteen".