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118243871 is a prime number
BaseRepresentation
bin1110000110001…
…00001000011111
322020111102002122
413003010020133
5220232300441
615422213155
72634025214
oct703041037
9266442078
10118243871
1160822409
12337241bb
131b6607b5
14119bdb0b
15a5aa34b
hex70c421f

118243871 has 2 divisors, whose sum is σ = 118243872. Its totient is φ = 118243870.

The previous prime is 118243843. The next prime is 118243883. The reversal of 118243871 is 178342811.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-118243871 is a prime.

It is a super-2 number, since 2×1182438712 = 27963226058129282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118243571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59121935 + 59121936.

It is an arithmetic number, because the mean of its divisors is an integer number (59121936).

Almost surely, 2118243871 is an apocalyptic number.

118243871 is a deficient number, since it is larger than the sum of its proper divisors (1).

118243871 is an equidigital number, since it uses as much as digits as its factorization.

118243871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 35.

The square root of 118243871 is about 10873.9997700938. Note that the first 3 decimals coincide. The cubic root of 118243871 is about 490.8244775615.

The spelling of 118243871 in words is "one hundred eighteen million, two hundred forty-three thousand, eight hundred seventy-one".