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1388108087 is a prime number
BaseRepresentation
bin101001010111100…
…1101100100110111
310120201222012022122
41102233031210313
510320323424322
6345423550155
746253503232
oct12257154467
93521865278
101388108087
11652607173
12328a5b35b
13191776a42
14d24d8419
1581ce6442
hex52bcd937

1388108087 has 2 divisors, whose sum is σ = 1388108088. Its totient is φ = 1388108086.

The previous prime is 1388108081. The next prime is 1388108093. The reversal of 1388108087 is 7808018831.

It is a balanced prime because it is at equal distance from previous prime (1388108081) and next prime (1388108093).

It is an emirp because it is prime and its reverse (7808018831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1388108087 - 214 = 1388091703 is a prime.

It is a super-2 number, since 2×13881080872 = 3853688122389599138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1388108081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694054043 + 694054044.

It is an arithmetic number, because the mean of its divisors is an integer number (694054044).

Almost surely, 21388108087 is an apocalyptic number.

1388108087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388108087 is an equidigital number, since it uses as much as digits as its factorization.

1388108087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 44.

The square root of 1388108087 is about 37257.3225956992. The cubic root of 1388108087 is about 1115.5124664737.

The spelling of 1388108087 in words is "one billion, three hundred eighty-eight million, one hundred eight thousand, eighty-seven".