163253747 has 4 divisors (see below), whose sum is σ = 170351760. Its totient is φ = 156155736.

The previous prime is 163253743. The next prime is 163253777. The reversal of 163253747 is 747352361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 163253747 - 2² = 163253743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163253747.

It is not an unprimeable number, because it can be changed into a prime (163253743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3548972 + ... + 3549017.

It is an arithmetic number, because the mean of its divisors is an integer number (42587940).

Almost surely, 2^163253747 is an apocalyptic number.

163253747 is a deficient number, since it is larger than the sum of its proper divisors (7098013).

163253747 is an equidigital number, since it uses as much as digits as its factorization.

163253747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7098012.

The product of its digits is 105840, while the sum is 38.

The square root of 163253747 is about 12777.0789697802. The cubic root of 163253747 is about 546.5388676486.

The spelling of 163253747 in words is "one hundred sixty-three million, two hundred fifty-three thousand, seven hundred forty-seven".