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168468365 = 5132591821
BaseRepresentation
bin10100000101010…
…01111110001101
3102202000002011002
422002221332031
5321111441430
624414510045
74113646262
oct1202517615
9382002132
10168468365
118710685a
1248505325
1328b97130
1418535269
15ebcb845
hexa0a9f8d

168468365 has 8 divisors (see below), whose sum is σ = 217713048. Its totient is φ = 124407360.

The previous prime is 168468361. The next prime is 168468371. The reversal of 168468365 is 563864861.

168468365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13924 + 168454441 = 118^2 + 12979^2 .

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

It is not a de Polignac number, because 168468365 - 22 = 168468361 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168468361) 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, 1295846 + ... + 1295975.

It is an arithmetic number, because the mean of its divisors is an integer number (27214131).

Almost surely, 2168468365 is an apocalyptic number.

It is an amenable number.

168468365 is a deficient number, since it is larger than the sum of its proper divisors (49244683).

168468365 is a wasteful number, since it uses less digits than its factorization.

168468365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591839.

The product of its digits is 829440, while the sum is 47.

The square root of 168468365 is about 12979.5363938779. The cubic root of 168468365 is about 552.2971307357.

The spelling of 168468365 in words is "one hundred sixty-eight million, four hundred sixty-eight thousand, three hundred sixty-five".

Divisors: 1 5 13 65 2591821 12959105 33693673 168468365