140843653 has 2 divisors, whose sum is σ = 140843654. Its totient is φ = 140843652.

The previous prime is 140843641. The next prime is 140843683. The reversal of 140843653 is 356348041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125843524 + 15000129 = 11218^2 + 3873^2 .

It is a cyclic number.

It is not a de Polignac number, because 140843653 - 2⁵ = 140843621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140843683) 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, 70421826 + 70421827.

It is an arithmetic number, because the mean of its divisors is an integer number (70421827).

Almost surely, 2^140843653 is an apocalyptic number.

It is an amenable number.

140843653 is a deficient number, since it is larger than the sum of its proper divisors (1).

140843653 is an equidigital number, since it uses as much as digits as its factorization.

140843653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 140843653 is about 11867.7568647154. The cubic root of 140843653 is about 520.2903371232.

The spelling of 140843653 in words is "one hundred forty million, eight hundred forty-three thousand, six hundred fifty-three".