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9125909149 = 71303701307
BaseRepresentation
bin10000111111111001…
…00101001010011101
3212120000000012220011
420133330211022131
5122142213043044
64105315523221
7442101643060
oct103774451235
925500005804
109125909149
113963379685
1219282b9511
13b25895a56
1462802c8d7
1538629d134
hex21ff2529d

9125909149 has 4 divisors (see below), whose sum is σ = 10429610464. Its totient is φ = 7822207836.

The previous prime is 9125909119. The next prime is 9125909183. The reversal of 9125909149 is 9419095219.

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 9125909149 - 29 = 9125908637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9125909119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651850647 + ... + 651850660.

It is an arithmetic number, because the mean of its divisors is an integer number (2607402616).

Almost surely, 29125909149 is an apocalyptic number.

It is an amenable number.

9125909149 is a deficient number, since it is larger than the sum of its proper divisors (1303701315).

9125909149 is a wasteful number, since it uses less digits than its factorization.

9125909149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303701314.

The product of its (nonzero) digits is 262440, while the sum is 49.

The square root of 9125909149 is about 95529.6244575472. The cubic root of 9125909149 is about 2089.7389957407.

The spelling of 9125909149 in words is "nine billion, one hundred twenty-five million, nine hundred nine thousand, one hundred forty-nine".

Divisors: 1 7 1303701307 9125909149