162963821 has 2 divisors, whose sum is σ = 162963822. Its totient is φ = 162963820.

The previous prime is 162963797. The next prime is 162963839. The reversal of 162963821 is 128369261.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112126921 + 50836900 = 10589^2 + 7130^2 .

It is a cyclic number.

It is not a de Polignac number, because 162963821 - 2¹⁴ = 162947437 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162963121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81481910 + 81481911.

It is an arithmetic number, because the mean of its divisors is an integer number (81481911).

Almost surely, 2^162963821 is an apocalyptic number.

It is an amenable number.

162963821 is a deficient number, since it is larger than the sum of its proper divisors (1).

162963821 is an equidigital number, since it uses as much as digits as its factorization.

162963821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 162963821 is about 12765.7283771824. The cubic root of 162963821 is about 546.2151390460.

The spelling of 162963821 in words is "one hundred sixty-two million, nine hundred sixty-three thousand, eight hundred twenty-one".