163657485 has 48 divisors (see below), whose sum is σ = 290279808. Its totient is φ = 85276800.

The previous prime is 163657457. The next prime is 163657499. The reversal of 163657485 is 584756361.

163657485 is a `hidden beast` number, since 1 + 636 + 5 + 7 + 4 + 8 + 5 = 666.

It is not a de Polignac number, because 163657485 - 2⁸ = 163657229 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 163657485.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 578154 + ... + 578436.

It is an arithmetic number, because the mean of its divisors is an integer number (6047496).

Almost surely, 2^163657485 is an apocalyptic number.

163657485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163657485 is a deficient number, since it is larger than the sum of its proper divisors (126622323).

163657485 is a wasteful number, since it uses less digits than its factorization.

163657485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546 (or 543 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 163657485 is about 12792.8685211723. The cubic root of 163657485 is about 546.9890397714.

The spelling of 163657485 in words is "one hundred sixty-three million, six hundred fifty-seven thousand, four hundred eighty-five".