163703137 has 8 divisors (see below), whose sum is σ = 176554280. Its totient is φ = 150888960.

The previous prime is 163703131. The next prime is 163703161. The reversal of 163703137 is 731307361.

It can be written as a sum of positive squares in 4 ways, for example, as 1115136 + 162588001 = 1056^2 + 12751^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163703137 - 2¹¹ = 163701089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163703099 and 163703108.

It is not an unprimeable number, because it can be changed into a prime (163703131) 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 7 ways as a sum of consecutive naturals, for example, 337 + ... + 18097.

It is an arithmetic number, because the mean of its divisors is an integer number (22069285).

Almost surely, 2^163703137 is an apocalyptic number.

It is an amenable number.

163703137 is a deficient number, since it is larger than the sum of its proper divisors (12851143).

163703137 is a wasteful number, since it uses less digits than its factorization.

163703137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18483.

The product of its (nonzero) digits is 7938, while the sum is 31.

The square root of 163703137 is about 12794.6526721127. The cubic root of 163703137 is about 547.0398956226.

The spelling of 163703137 in words is "one hundred sixty-three million, seven hundred three thousand, one hundred thirty-seven".