1641211603 has 8 divisors (see below), whose sum is σ = 1738944288. Its totient is φ = 1543611264.

The previous prime is 1641211577. The next prime is 1641211609. The reversal of 1641211603 is 3061121461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1641211603 - 2⁵ = 1641211571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1641211609) 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 7 ways as a sum of consecutive naturals, for example, 6951 + ... + 57712.

It is an arithmetic number, because the mean of its divisors is an integer number (217368036).

Almost surely, 2^1641211603 is an apocalyptic number.

1641211603 is a deficient number, since it is larger than the sum of its proper divisors (97732685).

1641211603 is a wasteful number, since it uses less digits than its factorization.

1641211603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66173.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1641211603 is about 40511.8699025360. The cubic root of 1641211603 is about 1179.5640453613.

The spelling of 1641211603 in words is "one billion, six hundred forty-one million, two hundred eleven thousand, six hundred three".