163305345 has 16 divisors (see below), whose sum is σ = 298615680. Its totient is φ = 74653824.

The previous prime is 163305343. The next prime is 163305347. The reversal of 163305345 is 543503361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (163305343) and next prime (163305347).

It is not a de Polignac number, because 163305345 - 2¹ = 163305343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163305343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 777540 + ... + 777749.

It is an arithmetic number, because the mean of its divisors is an integer number (18663480).

Almost surely, 2^163305345 is an apocalyptic number.

163305345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163305345 is a deficient number, since it is larger than the sum of its proper divisors (135310335).

163305345 is a wasteful number, since it uses less digits than its factorization.

163305345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555304.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 163305345 is about 12779.0979728618. The cubic root of 163305345 is about 546.5964412981.

The spelling of 163305345 in words is "one hundred sixty-three million, three hundred five thousand, three hundred forty-five".