1620463163 has 8 divisors (see below), whose sum is σ = 1773814896. Its totient is φ = 1468117600.

The previous prime is 1620463157. The next prime is 1620463237. The reversal of 1620463163 is 3613640261.

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 1620463163 - 2²² = 1616268859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1620433163) 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, 248168 + ... + 254613.

It is an arithmetic number, because the mean of its divisors is an integer number (221726862).

Almost surely, 2^1620463163 is an apocalyptic number.

1620463163 is a deficient number, since it is larger than the sum of its proper divisors (153351733).

1620463163 is a wasteful number, since it uses less digits than its factorization.

1620463163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503085.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1620463163 is about 40254.9768724316. The cubic root of 1620463163 is about 1174.5722089597.

The spelling of 1620463163 in words is "one billion, six hundred twenty million, four hundred sixty-three thousand, one hundred sixty-three".