1620063803 has 8 divisors (see below), whose sum is σ = 1666466256. Its totient is φ = 1574301600.

The previous prime is 1620063793. The next prime is 1620063877. The reversal of 1620063803 is 3083600261.

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 1620063803 - 2²⁶ = 1552954939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1620063883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154928 + ... + 165053.

It is an arithmetic number, because the mean of its divisors is an integer number (208308282).

Almost surely, 2^1620063803 is an apocalyptic number.

1620063803 is a deficient number, since it is larger than the sum of its proper divisors (46402453).

1620063803 is an equidigital number, since it uses as much as digits as its factorization.

1620063803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320125.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1620063803 is about 40250.0161863321. The cubic root of 1620063803 is about 1174.4757106853.

The spelling of 1620063803 in words is "one billion, six hundred twenty million, sixty-three thousand, eight hundred three".