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163404361 = 2276411123
BaseRepresentation
bin10011011110101…
…01101001001001
3102101110210122101
421233111221021
5313312414421
624114153401
74022625361
oct1157255111
9371423571
10163404361
118426812a
1246882861
1327b13193
14179b79a1
15e52b191
hex9bd5a49

163404361 has 8 divisors (see below), whose sum is σ = 164526624. Its totient is φ = 162286080.

The previous prime is 163404359. The next prime is 163404377.

163404361 is nontrivially palindromic in base 10.

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 163404361 - 21 = 163404359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163404961) 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, 144946 + ... + 146068.

It is an arithmetic number, because the mean of its divisors is an integer number (20565828).

Almost surely, 2163404361 is an apocalyptic number.

It is an amenable number.

163404361 is a deficient number, since it is larger than the sum of its proper divisors (1122263).

163404361 is a wasteful number, since it uses less digits than its factorization.

163404361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 163404361 is about 12782.9715246495. The cubic root of 163404361 is about 546.7068905477.

The spelling of 163404361 in words is "one hundred sixty-three million, four hundred four thousand, three hundred sixty-one".

Divisors: 1 227 641 1123 145507 254921 719843 163404361