163464451 has 4 divisors (see below), whose sum is σ = 163575000. Its totient is φ = 163353904.

The previous prime is 163464403. The next prime is 163464481. The reversal of 163464451 is 154464361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154464361 = 4651 ⋅33211.

It is a cyclic number.

It is not a de Polignac number, because 163464451 - 2¹⁹ = 162940163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163464481) 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 3 ways as a sum of consecutive naturals, for example, 53026 + ... + 56023.

It is an arithmetic number, because the mean of its divisors is an integer number (40893750).

Almost surely, 2^163464451 is an apocalyptic number.

163464451 is a deficient number, since it is larger than the sum of its proper divisors (110549).

163464451 is a wasteful number, since it uses less digits than its factorization.

163464451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110548.

The product of its digits is 34560, while the sum is 34.

The square root of 163464451 is about 12785.3217010758. The cubic root of 163464451 is about 546.7738973089.

The spelling of 163464451 in words is "one hundred sixty-three million, four hundred sixty-four thousand, four hundred fifty-one".