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161093065 = 574602659
BaseRepresentation
bin10011001101000…
…01010111001001
3102020010101010211
421212201113021
5312214434230
623552441121
73664161040
oct1146412711
9366111124
10161093065
1182a29671
1245b491a1
13274b4153
1417575557
15e22142a
hex99a15c9

161093065 has 8 divisors (see below), whose sum is σ = 220927680. Its totient is φ = 110463792.

The previous prime is 161092961. The next prime is 161093083. The reversal of 161093065 is 560390161.

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 161093065 - 213 = 161084873 is a prime.

It is an unprimeable number.

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, 2301295 + ... + 2301364.

It is an arithmetic number, because the mean of its divisors is an integer number (27615960).

Almost surely, 2161093065 is an apocalyptic number.

It is an amenable number.

161093065 is a deficient number, since it is larger than the sum of its proper divisors (59834615).

161093065 is an equidigital number, since it uses as much as digits as its factorization.

161093065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4602671.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 161093065 is about 12692.2442853894. The cubic root of 161093065 is about 544.1169832490.

The spelling of 161093065 in words is "one hundred sixty-one million, ninety-three thousand, sixty-five".

Divisors: 1 5 7 35 4602659 23013295 32218613 161093065