163073971 has 2 divisors, whose sum is σ = 163073972. Its totient is φ = 163073970.

The previous prime is 163073921. The next prime is 163073983. The reversal of 163073971 is 179370361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163073971 - 2¹³ = 163065779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163073971.

It is not a weakly prime, because it can be changed into another prime (163073921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81536985 + 81536986.

It is an arithmetic number, because the mean of its divisors is an integer number (81536986).

Almost surely, 2^163073971 is an apocalyptic number.

163073971 is a deficient number, since it is larger than the sum of its proper divisors (1).

163073971 is an equidigital number, since it uses as much as digits as its factorization.

163073971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 37.

The square root of 163073971 is about 12770.0419341520. The cubic root of 163073971 is about 546.3381766762.

The spelling of 163073971 in words is "one hundred sixty-three million, seventy-three thousand, nine hundred seventy-one".