161384783 has 12 divisors (see below), whose sum is σ = 189493992. Its totient is φ = 137032560.

The previous prime is 161384779. The next prime is 161384809. The reversal of 161384783 is 387483161.

It is not a de Polignac number, because 161384783 - 2² = 161384779 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161384783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161384183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10148 + ... + 20633.

It is an arithmetic number, because the mean of its divisors is an integer number (15791166).

Almost surely, 2^161384783 is an apocalyptic number.

161384783 is a deficient number, since it is larger than the sum of its proper divisors (28109209).

161384783 is a wasteful number, since it uses less digits than its factorization.

161384783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30902 (or 30895 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 161384783 is about 12703.7310661081. The cubic root of 161384783 is about 544.4452262271.

The spelling of 161384783 in words is "one hundred sixty-one million, three hundred eighty-four thousand, seven hundred eighty-three".