153640733 has 2 divisors, whose sum is σ = 153640734. Its totient is φ = 153640732.

The previous prime is 153640723. The next prime is 153640741. The reversal of 153640733 is 337046351.

153640733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77915929 + 75724804 = 8827^2 + 8702^2 .

It is an emirp because it is prime and its reverse (337046351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 153640733 - 2⁴ = 153640717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 153640733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (153640723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76820366 + 76820367.

It is an arithmetic number, because the mean of its divisors is an integer number (76820367).

Almost surely, 2^153640733 is an apocalyptic number.

It is an amenable number.

153640733 is a deficient number, since it is larger than the sum of its proper divisors (1).

153640733 is an equidigital number, since it uses as much as digits as its factorization.

153640733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 32.

The square root of 153640733 is about 12395.1899138335. The cubic root of 153640733 is about 535.5936961809.

The spelling of 153640733 in words is "one hundred fifty-three million, six hundred forty thousand, seven hundred thirty-three".