162643603 has 4 divisors (see below), whose sum is σ = 169715088. Its totient is φ = 155572120.

The previous prime is 162643549. The next prime is 162643627. The reversal of 162643603 is 306346261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162643603 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162643303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3535708 + ... + 3535753.

It is an arithmetic number, because the mean of its divisors is an integer number (42428772).

Almost surely, 2^162643603 is an apocalyptic number.

162643603 is a deficient number, since it is larger than the sum of its proper divisors (7071485).

162643603 is an equidigital number, since it uses as much as digits as its factorization.

162643603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7071484.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 162643603 is about 12753.1801132110. The cubic root of 162643603 is about 545.8571401435.

Adding to 162643603 its reverse (306346261), we get a palindrome (468989864).

The spelling of 162643603 in words is "one hundred sixty-two million, six hundred forty-three thousand, six hundred three".