163498643 has 12 divisors (see below), whose sum is σ = 207483192. Its totient is φ = 127401120.

The previous prime is 163498631. The next prime is 163498669. The reversal of 163498643 is 346894361.

It is not a de Polignac number, because 163498643 - 2⁴ = 163498627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163498594 and 163498603.

It is not an unprimeable number, because it can be changed into a prime (163498043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151130 + ... + 152207.

It is an arithmetic number, because the mean of its divisors is an integer number (17290266).

Almost surely, 2^163498643 is an apocalyptic number.

163498643 is a deficient number, since it is larger than the sum of its proper divisors (43984549).

163498643 is a wasteful number, since it uses less digits than its factorization.

163498643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303362 (or 303355 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 163498643 is about 12786.6587895353. The cubic root of 163498643 is about 546.8120177068.

The spelling of 163498643 in words is "one hundred sixty-three million, four hundred ninety-eight thousand, six hundred forty-three".