163072143 has 32 divisors (see below), whose sum is σ = 275486400. Its totient is φ = 94445568.

The previous prime is 163072123. The next prime is 163072153. The reversal of 163072143 is 341270361.

163072143 is a `hidden beast` number, since 1 + 630 + 7 + 21 + 4 + 3 = 666.

It is not a de Polignac number, because 163072143 - 2¹² = 163068047 is a prime.

It is a super-2 number, since 2×163072143² = 53185047645224898, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163072103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7698 + ... + 19631.

It is an arithmetic number, because the mean of its divisors is an integer number (8608950).

Almost surely, 2^163072143 is an apocalyptic number.

163072143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

163072143 is a deficient number, since it is larger than the sum of its proper divisors (112414257).

163072143 is a wasteful number, since it uses less digits than its factorization.

163072143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27368 (or 27362 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 163072143 is about 12769.9703601849. The cubic root of 163072143 is about 546.3361352510.

The spelling of 163072143 in words is "one hundred sixty-three million, seventy-two thousand, one hundred forty-three".