163400345 has 16 divisors (see below), whose sum is σ = 207921168. Its totient is φ = 122849280.

The previous prime is 163400339. The next prime is 163400371. The reversal of 163400345 is 543004361.

It can be written as a sum of positive squares in 8 ways, for example, as 1194649 + 162205696 = 1093^2 + 12736^2 .

It is not a de Polignac number, because 163400345 - 2²⁰ = 162351769 is a prime.

It is a super-2 number, since 2×163400345² = 53399345492238050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94085 + ... + 95805.

It is an arithmetic number, because the mean of its divisors is an integer number (12995073).

Almost surely, 2^163400345 is an apocalyptic number.

It is an amenable number.

163400345 is a deficient number, since it is larger than the sum of its proper divisors (44520823).

163400345 is a wasteful number, since it uses less digits than its factorization.

163400345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 163400345 is about 12782.8144397077. The cubic root of 163400345 is about 546.7024116937.

The spelling of 163400345 in words is "one hundred sixty-three million, four hundred thousand, three hundred forty-five".