1640413803 has 16 divisors (see below), whose sum is σ = 2511531776. Its totient is φ = 932934240.

The previous prime is 1640413799. The next prime is 1640413847. The reversal of 1640413803 is 3083140461.

It is not a de Polignac number, because 1640413803 - 2² = 1640413799 is a prime.

It is a Smith number, since the sum of its digits (30) 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 (1640413303) 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 15 ways as a sum of consecutive naturals, for example, 180676 + ... + 189537.

It is an arithmetic number, because the mean of its divisors is an integer number (156970736).

Almost surely, 2^1640413803 is an apocalyptic number.

1640413803 is a deficient number, since it is larger than the sum of its proper divisors (871117973).

1640413803 is a wasteful number, since it uses less digits than its factorization.

1640413803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370434.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1640413803 is about 40502.0222087737. The cubic root of 1640413803 is about 1179.3728840024.

The spelling of 1640413803 in words is "one billion, six hundred forty million, four hundred thirteen thousand, eight hundred three".