163783378 has 16 divisors (see below), whose sum is σ = 269659296. Its totient is φ = 73988640.

The previous prime is 163783369. The next prime is 163783381. The reversal of 163783378 is 873387361.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19251 + ... + 26422.

It is an arithmetic number, because the mean of its divisors is an integer number (16853706).

Almost surely, 2^163783378 is an apocalyptic number.

163783378 is a deficient number, since it is larger than the sum of its proper divisors (105875918).

163783378 is a wasteful number, since it uses less digits than its factorization.

163783378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45849.

The product of its digits is 508032, while the sum is 46.

The square root of 163783378 is about 12797.7880119964. The cubic root of 163783378 is about 547.1292603494.

The spelling of 163783378 in words is "one hundred sixty-three million, seven hundred eighty-three thousand, three hundred seventy-eight".