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134649581 = 1129422099
BaseRepresentation
bin10000000011010…
…01011011101101
3100101100220111112
420001221123231
5233432241311
621210001405
73223334243
oct1001513355
9311326445
10134649581
116a008250
1239116265
1321b85c11
1413c50793
15bc4b28b
hex80696ed

134649581 has 8 divisors (see below), whose sum is σ = 151956000. Its totient is φ = 118187440.

The previous prime is 134649551. The next prime is 134649589. The reversal of 134649581 is 185946431.

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 134649581 - 26 = 134649517 is a prime.

It is a super-2 number, since 2×1346495812 = 36261019326951122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134649589) 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 7 ways as a sum of consecutive naturals, for example, 210731 + ... + 211368.

It is an arithmetic number, because the mean of its divisors is an integer number (18994500).

Almost surely, 2134649581 is an apocalyptic number.

134649581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134649581 is a deficient number, since it is larger than the sum of its proper divisors (17306419).

134649581 is a wasteful number, since it uses less digits than its factorization.

134649581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422139.

The product of its digits is 103680, while the sum is 41.

The square root of 134649581 is about 11603.8606075737. The cubic root of 134649581 is about 512.5485415851.

The spelling of 134649581 in words is "one hundred thirty-four million, six hundred forty-nine thousand, five hundred eighty-one".

Divisors: 1 11 29 319 422099 4643089 12240871 134649581