163860345 has 24 divisors (see below), whose sum is σ = 309845952. Its totient is φ = 79447200.

The previous prime is 163860341. The next prime is 163860371. The reversal of 163860345 is 543068361.

163860345 is a `hidden beast` number, since 1 + 6 + 3 + 8 + 603 + 45 = 666.

It is not a de Polignac number, because 163860345 - 2² = 163860341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163860341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165021 + ... + 166010.

It is an arithmetic number, because the mean of its divisors is an integer number (12910248).

Almost surely, 2^163860345 is an apocalyptic number.

163860345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163860345 is a deficient number, since it is larger than the sum of its proper divisors (145985607).

163860345 is a wasteful number, since it uses less digits than its factorization.

163860345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331053 (or 331050 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 163860345 is about 12800.7947018925. The cubic root of 163860345 is about 547.2149513875.

The spelling of 163860345 in words is "one hundred sixty-three million, eight hundred sixty thousand, three hundred forty-five".