140518999 has 2 divisors, whose sum is σ = 140519000. Its totient is φ = 140518998.

The previous prime is 140518997. The next prime is 140519021. The reversal of 140518999 is 999815041.

It is a weak prime.

It is an emirp because it is prime and its reverse (999815041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140518999 - 2¹ = 140518997 is a prime.

Together with 140518997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140518997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70259499 + 70259500.

It is an arithmetic number, because the mean of its divisors is an integer number (70259500).

Almost surely, 2^140518999 is an apocalyptic number.

140518999 is a deficient number, since it is larger than the sum of its proper divisors (1).

140518999 is an equidigital number, since it uses as much as digits as its factorization.

140518999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 46.

The square root of 140518999 is about 11854.0709884832. The cubic root of 140518999 is about 519.8902616063.

The spelling of 140518999 in words is "one hundred forty million, five hundred eighteen thousand, nine hundred ninety-nine".