63156389 has 2 divisors, whose sum is σ = 63156390. Its totient is φ = 63156388.

The previous prime is 63156383. The next prime is 63156449. The reversal of 63156389 is 98365136.

63156389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62568100 + 588289 = 7910^2 + 767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63156389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63156383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31578194 + 31578195.

It is an arithmetic number, because the mean of its divisors is an integer number (31578195).

Almost surely, 2^63156389 is an apocalyptic number.

It is an amenable number.

63156389 is a deficient number, since it is larger than the sum of its proper divisors (1).

63156389 is an equidigital number, since it uses as much as digits as its factorization.

63156389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 41.

The square root of 63156389 is about 7947.0994079601. The cubic root of 63156389 is about 398.2346978146.

The spelling of 63156389 in words is "sixty-three million, one hundred fifty-six thousand, three hundred eighty-nine".