163540703 has 4 divisors (see below), whose sum is σ = 167960760. Its totient is φ = 159120648.

The previous prime is 163540693. The next prime is 163540709. The reversal of 163540703 is 307045361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 307045361 = 7 ⋅43863623.

It is a cyclic number.

It is not a de Polignac number, because 163540703 - 2¹⁰ = 163539679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163540709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2209973 + ... + 2210046.

It is an arithmetic number, because the mean of its divisors is an integer number (41990190).

Almost surely, 2^163540703 is an apocalyptic number.

163540703 is a deficient number, since it is larger than the sum of its proper divisors (4420057).

163540703 is an equidigital number, since it uses as much as digits as its factorization.

163540703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4420056.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 163540703 is about 12788.3033667489. The cubic root of 163540703 is about 546.8589027882.

The spelling of 163540703 in words is "one hundred sixty-three million, five hundred forty thousand, seven hundred three".