163951361 has 16 divisors (see below), whose sum is σ = 198998400. Its totient is φ = 131943168.

The previous prime is 163951339. The next prime is 163951363. The reversal of 163951361 is 163159361.

It is not a de Polignac number, because 163951361 - 2¹⁰ = 163950337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163951363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9575 + ... + 20483.

It is an arithmetic number, because the mean of its divisors is an integer number (12437400).

Almost surely, 2^163951361 is an apocalyptic number.

It is an amenable number.

163951361 is a deficient number, since it is larger than the sum of its proper divisors (35047039).

163951361 is a wasteful number, since it uses less digits than its factorization.

163951361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11048.

The product of its digits is 14580, while the sum is 35.

The square root of 163951361 is about 12804.3493001402. The cubic root of 163951361 is about 547.3162492283.

The spelling of 163951361 in words is "one hundred sixty-three million, nine hundred fifty-one thousand, three hundred sixty-one".