1220854163 has 2 divisors, whose sum is σ = 1220854164. Its totient is φ = 1220854162.

The previous prime is 1220854123. The next prime is 1220854181. The reversal of 1220854163 is 3614580221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220854163 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220854123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610427081 + 610427082.

It is an arithmetic number, because the mean of its divisors is an integer number (610427082).

Almost surely, 2^1220854163 is an apocalyptic number.

1220854163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220854163 is an equidigital number, since it uses as much as digits as its factorization.

1220854163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 1220854163 is about 34940.7235614834. The cubic root of 1220854163 is about 1068.7790431650.

The spelling of 1220854163 in words is "one billion, two hundred twenty million, eight hundred fifty-four thousand, one hundred sixty-three".