163745745 has 32 divisors (see below), whose sum is σ = 273784320. Its totient is φ = 83462400.

The previous prime is 163745731. The next prime is 163745761. The reversal of 163745745 is 547547361.

It is a happy number.

163745745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 163745745 - 2⁵ = 163745713 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 163745697 and 163745706.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42072 + ... + 45798.

It is an arithmetic number, because the mean of its divisors is an integer number (8555760).

Almost surely, 2^163745745 is an apocalyptic number.

163745745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163745745 is a deficient number, since it is larger than the sum of its proper divisors (110038575).

163745745 is a wasteful number, since it uses less digits than its factorization.

163745745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3865.

The product of its digits is 352800, while the sum is 42.

The square root of 163745745 is about 12796.3176343822. The cubic root of 163745745 is about 547.0873519601.

The spelling of 163745745 in words is "one hundred sixty-three million, seven hundred forty-five thousand, seven hundred forty-five".