4156463221 has 2 divisors, whose sum is σ = 4156463222. Its totient is φ = 4156463220.

The previous prime is 4156463183. The next prime is 4156463243. The reversal of 4156463221 is 1223646514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2974066225 + 1182396996 = 54535^2 + 34386^2 .

It is a cyclic number.

It is not a de Polignac number, because 4156463221 - 2¹¹ = 4156461173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4156463021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2078231610 + 2078231611.

It is an arithmetic number, because the mean of its divisors is an integer number (2078231611).

Almost surely, 2^4156463221 is an apocalyptic number.

It is an amenable number.

4156463221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4156463221 is an equidigital number, since it uses as much as digits as its factorization.

4156463221 is an odious number, because the sum of its binary digits is odd.

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

The square root of 4156463221 is about 64470.6384410764. The cubic root of 4156463221 is about 1607.8343915658.

The spelling of 4156463221 in words is "four billion, one hundred fifty-six million, four hundred sixty-three thousand, two hundred twenty-one".