163145451 has 24 divisors (see below), whose sum is σ = 254689680. Its totient is φ = 92619072.

The previous prime is 163145449. The next prime is 163145459. The reversal of 163145451 is 154541361.

It is a happy number.

It is not a de Polignac number, because 163145451 - 2¹ = 163145449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163145459) 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 23 ways as a sum of consecutive naturals, for example, 19545 + ... + 26613.

It is an arithmetic number, because the mean of its divisors is an integer number (10612070).

Almost surely, 2^163145451 is an apocalyptic number.

163145451 is a deficient number, since it is larger than the sum of its proper divisors (91544229).

163145451 is a wasteful number, since it uses less digits than its factorization.

163145451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7243 (or 7236 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 163145451 is about 12772.8403654003. The cubic root of 163145451 is about 546.4179902481.

The spelling of 163145451 in words is "one hundred sixty-three million, one hundred forty-five thousand, four hundred fifty-one".