1491085603 has 8 divisors (see below), whose sum is σ = 1729532672. Its totient is φ = 1258997256.

The previous prime is 1491085571. The next prime is 1491085633. The reversal of 1491085603 is 3065801941.

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 1491085603 - 2⁵ = 1491085571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1491085633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1589175 + ... + 1590112.

It is an arithmetic number, because the mean of its divisors is an integer number (216191584).

Almost surely, 2^1491085603 is an apocalyptic number.

1491085603 is a deficient number, since it is larger than the sum of its proper divisors (238447069).

1491085603 is an equidigital number, since it uses as much as digits as its factorization.

1491085603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3179361.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1491085603 is about 38614.5775970682. The cubic root of 1491085603 is about 1142.4420827815.

The spelling of 1491085603 in words is "one billion, four hundred ninety-one million, eighty-five thousand, six hundred three".