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83154109 = 4113914591
BaseRepresentation
bin1001111010011…
…01010010111101
312210110122222211
410331031102331
5132241412414
612130140421
72026540543
oct475152275
9183418884
1083154109
1142a35a05
1223a21711
13142c5c1c
14b087d93
1574783c4
hex4f4d4bd

83154109 has 8 divisors (see below), whose sum is σ = 85800960. Its totient is φ = 80536800.

The previous prime is 83154103. The next prime is 83154161. The reversal of 83154109 is 90145138.

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 83154109 - 213 = 83145917 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 (83154103) 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, 1597 + ... + 12994.

It is an arithmetic number, because the mean of its divisors is an integer number (10725120).

Almost surely, 283154109 is an apocalyptic number.

It is an amenable number.

83154109 is a deficient number, since it is larger than the sum of its proper divisors (2646851).

83154109 is a wasteful number, since it uses less digits than its factorization.

83154109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14771.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 83154109 is about 9118.8874869690. The cubic root of 83154109 is about 436.4768738620.

The spelling of 83154109 in words is "eighty-three million, one hundred fifty-four thousand, one hundred nine".

Divisors: 1 41 139 5699 14591 598231 2028149 83154109