1620414505 has 16 divisors (see below), whose sum is σ = 2003097600. Its totient is φ = 1257619840.

The previous prime is 1620414479. The next prime is 1620414529. The reversal of 1620414505 is 5054140261.

It is not a de Polignac number, because 1620414505 - 2¹³ = 1620406313 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14616 + ... + 58774.

It is an arithmetic number, because the mean of its divisors is an integer number (125193600).

Almost surely, 2^1620414505 is an apocalyptic number.

It is an amenable number.

1620414505 is a deficient number, since it is larger than the sum of its proper divisors (382683095).

1620414505 is a wasteful number, since it uses less digits than its factorization.

1620414505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44384.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1620414505 is about 40254.3724954197. The cubic root of 1620414505 is about 1174.5604524636.

Adding to 1620414505 its reverse (5054140261), we get a palindrome (6674554766).

The spelling of 1620414505 in words is "one billion, six hundred twenty million, four hundred fourteen thousand, five hundred five".