163783332 has 18 divisors (see below), whose sum is σ = 414007958. Its totient is φ = 54594432.

The previous prime is 163783331. The next prime is 163783343. The reversal of 163783332 is 233387361.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 143856036 + 19927296 = 11994^2 + 4464^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4549537 = 163783332 / (1 + 6 + 3 + 7 + 8 + 3 + 3 + 3 + 2).

It is not an unprimeable number, because it can be changed into a prime (163783331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2274733 + ... + 2274804.

Almost surely, 2^163783332 is an apocalyptic number.

163783332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

163783332 is an abundant number, since it is smaller than the sum of its proper divisors (250224626).

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

163783332 is a wasteful number, since it uses less digits than its factorization.

163783332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549547 (or 4549542 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 163783332 is about 12797.7862148107. The cubic root of 163783332 is about 547.1292091273.

The spelling of 163783332 in words is "one hundred sixty-three million, seven hundred eighty-three thousand, three hundred thirty-two".