140728813 has 2 divisors, whose sum is σ = 140728814. Its totient is φ = 140728812.

The previous prime is 140728811. The next prime is 140728843. The reversal of 140728813 is 318827041.

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., 89075844 + 51652969 = 9438^2 + 7187^2 .

It is a cyclic number.

It is not a de Polignac number, because 140728813 - 2¹ = 140728811 is a prime.

Together with 140728811, 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 (140728811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70364406 + 70364407.

It is an arithmetic number, because the mean of its divisors is an integer number (70364407).

Almost surely, 2^140728813 is an apocalyptic number.

It is an amenable number.

140728813 is a deficient number, since it is larger than the sum of its proper divisors (1).

140728813 is an equidigital number, since it uses as much as digits as its factorization.

140728813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 140728813 is about 11862.9175585098. The cubic root of 140728813 is about 520.1488885785.

The spelling of 140728813 in words is "one hundred forty million, seven hundred twenty-eight thousand, eight hundred thirteen".