1620063433 has 8 divisors (see below), whose sum is σ = 1715751720. Its totient is φ = 1524418560.

The previous prime is 1620063427. The next prime is 1620063451. The reversal of 1620063433 is 3343600261.

It can be written as a sum of positive squares in 4 ways, for example, as 104284944 + 1515778489 = 10212^2 + 38933^2 .

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

It is not a de Polignac number, because 1620063433 - 2²¹ = 1617966281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1620063233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96273 + ... + 111841.

It is an arithmetic number, because the mean of its divisors is an integer number (214468965).

Almost surely, 2^1620063433 is an apocalyptic number.

It is an amenable number.

1620063433 is a deficient number, since it is larger than the sum of its proper divisors (95688287).

1620063433 is a wasteful number, since it uses less digits than its factorization.

1620063433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21707.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 1620063433 is about 40250.0115900604. The cubic root of 1620063433 is about 1174.4756212740.

Adding to 1620063433 its reverse (3343600261), we get a palindrome (4963663694).

The spelling of 1620063433 in words is "one billion, six hundred twenty million, sixty-three thousand, four hundred thirty-three".