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16163129 = 19850691
BaseRepresentation
bin111101101010…
…000100111001
31010102011122102
4331222010321
513114210004
61334233145
7254245553
oct75520471
933364572
1016163129
11913a664
1254b57b5
13346bba8
14220a4d3
15164411e
hexf6a139

16163129 has 4 divisors (see below), whose sum is σ = 17013840. Its totient is φ = 15312420.

The previous prime is 16163113. The next prime is 16163137. The reversal of 16163129 is 92136161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16163129 - 24 = 16163113 is a prime.

It is a super-2 number, since 2×161631292 = 522493478141282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16163029) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 425327 + ... + 425364.

It is an arithmetic number, because the mean of its divisors is an integer number (4253460).

Almost surely, 216163129 is an apocalyptic number.

16163129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16163129 is a deficient number, since it is larger than the sum of its proper divisors (850711).

16163129 is an equidigital number, since it uses as much as digits as its factorization.

16163129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850710.

The product of its digits is 1944, while the sum is 29.

The square root of 16163129 is about 4020.3394135321. The cubic root of 16163129 is about 252.8376895367.

The spelling of 16163129 in words is "sixteen million, one hundred sixty-three thousand, one hundred twenty-nine".

Divisors: 1 19 850691 16163129