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8187982897 is a prime number
BaseRepresentation
bin1111010000000101…
…01011010000110001
3210010122010121221211
413220002223100301
5113232110423042
63432252520121
7406622464153
oct75002532061
923118117854
108187982897
1135219a2816
121706180041
13a064806c3
1457963cad3
1532dc7e017
hex1e80ab431

8187982897 has 2 divisors, whose sum is σ = 8187982898. Its totient is φ = 8187982896.

The previous prime is 8187982783. The next prime is 8187982903. The reversal of 8187982897 is 7982897818.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7204784161 + 983198736 = 84881^2 + 31356^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-8187982897 is a prime.

It is not a weakly prime, because it can be changed into another prime (8187982597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4093991448 + 4093991449.

It is an arithmetic number, because the mean of its divisors is an integer number (4093991449).

Almost surely, 28187982897 is an apocalyptic number.

It is an amenable number.

8187982897 is a deficient number, since it is larger than the sum of its proper divisors (1).

8187982897 is an equidigital number, since it uses as much as digits as its factorization.

8187982897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32514048, while the sum is 67.

The square root of 8187982897 is about 90487.4737021650. The cubic root of 8187982897 is about 2015.5441186244.

The spelling of 8187982897 in words is "eight billion, one hundred eighty-seven million, nine hundred eighty-two thousand, eight hundred ninety-seven".