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164830897 = 71117911959
BaseRepresentation
bin10011101001100…
…01111010110001
3102111011021111001
421310301322301
5314144042042
624204522001
74041016360
oct1164617261
9374137431
10164830897
1185051990
1247250301
13281c259a
1417c697d7
15e70dbb7
hex9d31eb1

164830897 has 16 divisors (see below), whose sum is σ = 206668800. Its totient is φ = 127711440.

The previous prime is 164830877. The next prime is 164830907. The reversal of 164830897 is 798038461.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 164830897 - 211 = 164828849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164830847) 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, 7804 + ... + 19762.

It is an arithmetic number, because the mean of its divisors is an integer number (12916800).

Almost surely, 2164830897 is an apocalyptic number.

It is an amenable number.

164830897 is a deficient number, since it is larger than the sum of its proper divisors (41837903).

164830897 is a wasteful number, since it uses less digits than its factorization.

164830897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12156.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 164830897 is about 12838.6485659512. The cubic root of 164830897 is about 548.2932180157.

The spelling of 164830897 in words is "one hundred sixty-four million, eight hundred thirty thousand, eight hundred ninety-seven".

Divisors: 1 7 11 77 179 1253 1969 11959 13783 83713 131549 920843 2140661 14984627 23547271 164830897