163051951 has 2 divisors, whose sum is σ = 163051952. Its totient is φ = 163051950.

The previous prime is 163051943. The next prime is 163051961. The reversal of 163051951 is 159150361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163051951 - 2³ = 163051943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163051921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81525975 + 81525976.

It is an arithmetic number, because the mean of its divisors is an integer number (81525976).

Almost surely, 2^163051951 is an apocalyptic number.

163051951 is a deficient number, since it is larger than the sum of its proper divisors (1).

163051951 is an equidigital number, since it uses as much as digits as its factorization.

163051951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 31.

The square root of 163051951 is about 12769.1797308989. The cubic root of 163051951 is about 546.3135847520.

The spelling of 163051951 in words is "one hundred sixty-three million, fifty-one thousand, nine hundred fifty-one".