163381547 has 8 divisors (see below), whose sum is σ = 187959552. Its totient is φ = 139113000.

The previous prime is 163381523. The next prime is 163381609. The reversal of 163381547 is 745183361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163381547 - 2⁸ = 163381291 is a prime.

It is a super-2 number, since 2×163381547² = 53387059800226418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163381547.

It is not an unprimeable number, because it can be changed into a prime (163381507) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 76229 + ... + 78342.

It is an arithmetic number, because the mean of its divisors is an integer number (23494944).

Almost surely, 2^163381547 is an apocalyptic number.

163381547 is a deficient number, since it is larger than the sum of its proper divisors (24578005).

163381547 is a wasteful number, since it uses less digits than its factorization.

163381547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154729.

The product of its digits is 60480, while the sum is 38.

The square root of 163381547 is about 12782.0791344757. The cubic root of 163381547 is about 546.6814462013.

The spelling of 163381547 in words is "one hundred sixty-three million, three hundred eighty-one thousand, five hundred forty-seven".