140868187 has 2 divisors, whose sum is σ = 140868188. Its totient is φ = 140868186.

The previous prime is 140868163. The next prime is 140868193. The reversal of 140868187 is 781868041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140868187 - 2²⁷ = 6650459 is a prime.

It is a super-2 number, since 2×140868187² = 39687692217333938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140868157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70434093 + 70434094.

It is an arithmetic number, because the mean of its divisors is an integer number (70434094).

Almost surely, 2^140868187 is an apocalyptic number.

140868187 is a deficient number, since it is larger than the sum of its proper divisors (1).

140868187 is an equidigital number, since it uses as much as digits as its factorization.

140868187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 43.

The square root of 140868187 is about 11868.7904606999. The cubic root of 140868187 is about 520.3205457073.

The spelling of 140868187 in words is "one hundred forty million, eight hundred sixty-eight thousand, one hundred eighty-seven".