1208728163 has 2 divisors, whose sum is σ = 1208728164. Its totient is φ = 1208728162.

The previous prime is 1208728061. The next prime is 1208728193. The reversal of 1208728163 is 3618278021.

It is a strong prime.

It is an emirp because it is prime and its reverse (3618278021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1208728163 - 2⁸ = 1208727907 is a prime.

It is a super-2 number, since 2×1208728163² = 2922047544058709138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1208728193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604364081 + 604364082.

It is an arithmetic number, because the mean of its divisors is an integer number (604364082).

Almost surely, 2^1208728163 is an apocalyptic number.

1208728163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1208728163 is an equidigital number, since it uses as much as digits as its factorization.

1208728163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1208728163 is about 34766.7680839045. The cubic root of 1208728163 is about 1065.2287526140.

The spelling of 1208728163 in words is "one billion, two hundred eight million, seven hundred twenty-eight thousand, one hundred sixty-three".