1641247603 has 4 divisors (see below), whose sum is σ = 1641427648. Its totient is φ = 1641067560.

The previous prime is 1641247583. The next prime is 1641247631. The reversal of 1641247603 is 3067421461.

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-1641247603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1641247633) 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, 75576 + ... + 94837.

It is an arithmetic number, because the mean of its divisors is an integer number (410356912).

Almost surely, 2^1641247603 is an apocalyptic number.

1641247603 is a deficient number, since it is larger than the sum of its proper divisors (180045).

1641247603 is an equidigital number, since it uses as much as digits as its factorization.

1641247603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180044.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 1641247603 is about 40512.3142143225. The cubic root of 1641247603 is about 1179.5726698829.

The spelling of 1641247603 in words is "one billion, six hundred forty-one million, two hundred forty-seven thousand, six hundred three".