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188008061 is a prime number
BaseRepresentation
bin10110011010011…
…00011001111101
3111002202210120112
423031030121331
5341112224221
630353355405
74442020313
oct1315143175
9432683515
10188008061
119714226a
1252b68b65
132cc48b97
141ad800b3
151178b15b
hexb34c67d

188008061 has 2 divisors, whose sum is σ = 188008062. Its totient is φ = 188008060.

The previous prime is 188008057. The next prime is 188008091. The reversal of 188008061 is 160800881.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127464100 + 60543961 = 11290^2 + 7781^2 .

It is an emirp because it is prime and its reverse (160800881) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 190800881 and 188008091.

It is a cyclic number.

It is not a de Polignac number, because 188008061 - 22 = 188008057 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188008091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94004030 + 94004031.

It is an arithmetic number, because the mean of its divisors is an integer number (94004031).

Almost surely, 2188008061 is an apocalyptic number.

It is an amenable number.

188008061 is a deficient number, since it is larger than the sum of its proper divisors (1).

188008061 is an equidigital number, since it uses as much as digits as its factorization.

188008061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 188008061 is about 13711.6031520753. The cubic root of 188008061 is about 572.8736191909.

The spelling of 188008061 in words is "one hundred eighty-eight million, eight thousand, sixty-one".