163963257 has 8 divisors (see below), whose sum is σ = 223701984. Its totient is φ = 106766688.

The previous prime is 163963231. The next prime is 163963259. The reversal of 163963257 is 752369361.

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

It is not a de Polignac number, because 163963257 - 2⁶ = 163963193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163963259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635388 + ... + 635645.

It is an arithmetic number, because the mean of its divisors is an integer number (27962748).

Almost surely, 2^163963257 is an apocalyptic number.

It is an amenable number.

163963257 is a deficient number, since it is larger than the sum of its proper divisors (59738727).

163963257 is a wasteful number, since it uses less digits than its factorization.

163963257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271079.

The product of its digits is 204120, while the sum is 42.

The square root of 163963257 is about 12804.8138213720. The cubic root of 163963257 is about 547.3294863181.

The spelling of 163963257 in words is "one hundred sixty-three million, nine hundred sixty-three thousand, two hundred fifty-seven".