1620506346 has 8 divisors (see below), whose sum is σ = 3241012704. Its totient is φ = 540168780.

The previous prime is 1620506339. The next prime is 1620506389. The reversal of 1620506346 is 6436050261.

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

1620506346 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 135042190 + ... + 135042201.

It is an arithmetic number, because the mean of its divisors is an integer number (405126588).

Almost surely, 2^1620506346 is an apocalyptic number.

1620506346 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1620506346 is a wasteful number, since it uses less digits than its factorization.

1620506346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270084396.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1620506346 is about 40255.5132373194. The cubic root of 1620506346 is about 1174.5826424173.

The spelling of 1620506346 in words is "one billion, six hundred twenty million, five hundred six thousand, three hundred forty-six".