156868753 has 2 divisors, whose sum is σ = 156868754. Its totient is φ = 156868752.

The previous prime is 156868729. The next prime is 156868771. The reversal of 156868753 is 357868651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145733184 + 11135569 = 12072^2 + 3337^2 .

It is a cyclic number.

It is not a de Polignac number, because 156868753 - 2²¹ = 154771601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 156868697 and 156868706.

It is not a weakly prime, because it can be changed into another prime (156868703) 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, 78434376 + 78434377.

It is an arithmetic number, because the mean of its divisors is an integer number (78434377).

Almost surely, 2^156868753 is an apocalyptic number.

It is an amenable number.

156868753 is a deficient number, since it is larger than the sum of its proper divisors (1).

156868753 is an equidigital number, since it uses as much as digits as its factorization.

156868753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 49.

The square root of 156868753 is about 12524.7256656583. The cubic root of 156868753 is about 539.3187029812.

The spelling of 156868753 in words is "one hundred fifty-six million, eight hundred sixty-eight thousand, seven hundred fifty-three".