163805051 has 2 divisors, whose sum is σ = 163805052. Its totient is φ = 163805050.

The previous prime is 163805039. The next prime is 163805077. The reversal of 163805051 is 150508361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163805051 - 2⁶ = 163804987 is a prime.

It is a super-2 number, since 2×163805051² = 53664189466225202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (163805651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81902525 + 81902526.

It is an arithmetic number, because the mean of its divisors is an integer number (81902526).

Almost surely, 2^163805051 is an apocalyptic number.

163805051 is a deficient number, since it is larger than the sum of its proper divisors (1).

163805051 is an equidigital number, since it uses as much as digits as its factorization.

163805051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 163805051 is about 12798.6347318767. The cubic root of 163805051 is about 547.1533926506.

The spelling of 163805051 in words is "one hundred sixty-three million, eight hundred five thousand, fifty-one".