163344451 has 6 divisors (see below), whose sum is σ = 167427356. Its totient is φ = 159358800.

The previous prime is 163344439. The next prime is 163344469. The reversal of 163344451 is 154443361.

It is a happy number.

It is not a de Polignac number, because 163344451 - 2²⁷ = 29126723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163344491) 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 5 ways as a sum of consecutive naturals, for example, 46905 + ... + 50266.

Almost surely, 2^163344451 is an apocalyptic number.

163344451 is a deficient number, since it is larger than the sum of its proper divisors (4082905).

163344451 is an frugal number, since it uses more digits than its factorization.

163344451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97253 (or 97212 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 163344451 is about 12780.6279579683. The cubic root of 163344451 is about 546.6400681503.

The spelling of 163344451 in words is "one hundred sixty-three million, three hundred forty-four thousand, four hundred fifty-one".