163729354 has 4 divisors (see below), whose sum is σ = 245594034. Its totient is φ = 81864676.

The previous prime is 163729309. The next prime is 163729381. The reversal of 163729354 is 453927361.

It is a happy number.

163729354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 453927361 = 4957 ⋅91573.

It can be written as a sum of positive squares in only one way, i.e., 153636025 + 10093329 = 12395^2 + 3177^2 .

It is a super-2 number, since 2×163729354² = 53614602722514632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40932337 + ... + 40932340.

Almost surely, 2^163729354 is an apocalyptic number.

163729354 is a deficient number, since it is larger than the sum of its proper divisors (81864680).

163729354 is an equidigital number, since it uses as much as digits as its factorization.

163729354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81864679.

The product of its digits is 136080, while the sum is 40.

The square root of 163729354 is about 12795.6771606664. The cubic root of 163729354 is about 547.0690968130.

The spelling of 163729354 in words is "one hundred sixty-three million, seven hundred twenty-nine thousand, three hundred fifty-four".