815022163 has 2 divisors, whose sum is σ = 815022164. Its totient is φ = 815022162.

The previous prime is 815022139. The next prime is 815022167. The reversal of 815022163 is 361220518.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 815022163 - 2²¹ = 812925011 is a prime.

It is a super-2 number, since 2×815022163² = 1328522252362397138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (815022167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407511081 + 407511082.

It is an arithmetic number, because the mean of its divisors is an integer number (407511082).

Almost surely, 2^815022163 is an apocalyptic number.

815022163 is a deficient number, since it is larger than the sum of its proper divisors (1).

815022163 is an equidigital number, since it uses as much as digits as its factorization.

815022163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 815022163 is about 28548.5930126162. The cubic root of 815022163 is about 934.0923304677.

The spelling of 815022163 in words is "eight hundred fifteen million, twenty-two thousand, one hundred sixty-three".