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188530153 = 71715710091
BaseRepresentation
bin10110011110010…
…11110111101001
3111010202022202021
423033023313221
5341230431103
630412504441
74446323410
oct1317136751
9433668667
10188530153
1197469549
125317b121
133009c706
141b078477
1511840bbd
hexb3cbde9

188530153 has 16 divisors (see below), whose sum is σ = 229613184. Its totient is φ = 151107840.

The previous prime is 188530129. The next prime is 188530157. The reversal of 188530153 is 351035881.

It is a cyclic number.

It is not a de Polignac number, because 188530153 - 29 = 188529641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188530157) 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, 13638 + ... + 23728.

It is an arithmetic number, because the mean of its divisors is an integer number (14350824).

Almost surely, 2188530153 is an apocalyptic number.

It is an amenable number.

188530153 is a deficient number, since it is larger than the sum of its proper divisors (41083031).

188530153 is a wasteful number, since it uses less digits than its factorization.

188530153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10272.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 188530153 is about 13730.6282813278. The cubic root of 188530153 is about 573.4034126149.

The spelling of 188530153 in words is "one hundred eighty-eight million, five hundred thirty thousand, one hundred fifty-three".

Divisors: 1 7 17 119 157 1099 2669 10091 18683 70637 171547 1200829 1584287 11090009 26932879 188530153