163745355 has 32 divisors (see below), whose sum is σ = 271537920. Its totient is φ = 84206720.

The previous prime is 163745311. The next prime is 163745389. The reversal of 163745355 is 553547361.

It is not a de Polignac number, because 163745355 - 2²¹ = 161648203 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45160 + ... + 48650.

It is an arithmetic number, because the mean of its divisors is an integer number (8485560).

Almost surely, 2^163745355 is an apocalyptic number.

163745355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163745355 is a deficient number, since it is larger than the sum of its proper divisors (107792565).

163745355 is a wasteful number, since it uses less digits than its factorization.

163745355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3611.

The product of its digits is 189000, while the sum is 39.

The square root of 163745355 is about 12796.3023956141. The cubic root of 163745355 is about 547.0869176196.

The spelling of 163745355 in words is "one hundred sixty-three million, seven hundred forty-five thousand, three hundred fifty-five".