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1868397119 is a prime number
BaseRepresentation
bin110111101011101…
…0111101000111111
311211012201102000022
41233113113220333
512311302201434
6505222122355
764205053631
oct15727275077
94735642008
101868397119
11879730456
124418803bb
1323a11a134
1413a1dca51
15ae06922e
hex6f5d7a3f

1868397119 has 2 divisors, whose sum is σ = 1868397120. Its totient is φ = 1868397118.

The previous prime is 1868397061. The next prime is 1868397127. The reversal of 1868397119 is 9117938681.

It is a strong prime.

It is an emirp because it is prime and its reverse (9117938681) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1868397119 is a prime.

It is a super-2 number, since 2×18683971192 = 6981815588575000322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1868397149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934198559 + 934198560.

It is an arithmetic number, because the mean of its divisors is an integer number (934198560).

Almost surely, 21868397119 is an apocalyptic number.

1868397119 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868397119 is an equidigital number, since it uses as much as digits as its factorization.

1868397119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 53.

The square root of 1868397119 is about 43224.9594447467. The cubic root of 1868397119 is about 1231.6568587336.

The spelling of 1868397119 in words is "one billion, eight hundred sixty-eight million, three hundred ninety-seven thousand, one hundred nineteen".