163243450 has 24 divisors (see below), whose sum is σ = 304481628. Its totient is φ = 65114880.

The previous prime is 163243447. The next prime is 163243471. The reversal of 163243450 is 54342361.

It can be written as a sum of positive squares in 6 ways, for example, as 96216481 + 67026969 = 9809^2 + 8187^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 14274 + ... + 23026.

Almost surely, 2^163243450 is an apocalyptic number.

163243450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163243450 is a deficient number, since it is larger than the sum of its proper divisors (141238178).

163243450 is a wasteful number, since it uses less digits than its factorization.

163243450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9138 (or 9133 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 163243450 is about 12776.6760153023. The cubic root of 163243450 is about 546.5273766841.

The spelling of 163243450 in words is "one hundred sixty-three million, two hundred forty-three thousand, four hundred fifty".