140206163 has 2 divisors, whose sum is σ = 140206164. Its totient is φ = 140206162.

The previous prime is 140206141. The next prime is 140206207. The reversal of 140206163 is 361602041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140206163 - 2¹⁰ = 140205139 is a prime.

It is not a weakly prime, because it can be changed into another prime (140206663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70103081 + 70103082.

It is an arithmetic number, because the mean of its divisors is an integer number (70103082).

Almost surely, 2^140206163 is an apocalyptic number.

140206163 is a deficient number, since it is larger than the sum of its proper divisors (1).

140206163 is an equidigital number, since it uses as much as digits as its factorization.

140206163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 140206163 is about 11840.8683380908. The cubic root of 140206163 is about 519.5041661662.

The spelling of 140206163 in words is "one hundred forty million, two hundred six thousand, one hundred sixty-three".