163880775 has 36 divisors (see below), whose sum is σ = 299793312. Its totient is φ = 85537920.

The previous prime is 163880729. The next prime is 163880791. The reversal of 163880775 is 577088361.

163880775 is a `hidden beast` number, since 1 + 638 + 8 + 0 + 7 + 7 + 5 = 666.

It is not a de Polignac number, because 163880775 - 2¹⁴ = 163864391 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 163880775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2827 + ... + 18323.

It is an arithmetic number, because the mean of its divisors is an integer number (8327592).

Almost surely, 2^163880775 is an apocalyptic number.

163880775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163880775 is a deficient number, since it is larger than the sum of its proper divisors (135912537).

163880775 is a wasteful number, since it uses less digits than its factorization.

163880775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15560 (or 15552 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 163880775 is about 12801.5926743511. The cubic root of 163880775 is about 547.2376925758.

The spelling of 163880775 in words is "one hundred sixty-three million, eight hundred eighty thousand, seven hundred seventy-five".