1620116000 has 48 divisors (see below), whose sum is σ = 3980634840. Its totient is φ = 648044800.

The previous prime is 1620115949. The next prime is 1620116011. The reversal of 1620116000 is 6110261.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 768176656 + 851939344 = 27716^2 + 29188^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1620116000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198515 + ... + 206514.

Almost surely, 2^1620116000 is an apocalyptic number.

1620116000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1620116000 is an abundant number, since it is smaller than the sum of its proper divisors (2360518840).

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

1620116000 is an equidigital number, since it uses as much as digits as its factorization.

1620116000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405054 (or 405036 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1620116000 is about 40250.6645907866. The cubic root of 1620116000 is about 1174.4883240672.

Adding to 1620116000 its reverse (6110261), we get a palindrome (1626226261).

The spelling of 1620116000 in words is "one billion, six hundred twenty million, one hundred sixteen thousand".