1620000273 has 16 divisors (see below), whose sum is σ = 2172289280. Its totient is φ = 1073869056.

The previous prime is 1620000257. The next prime is 1620000281. The reversal of 1620000273 is 3720000261.

It is a happy number.

It is not a de Polignac number, because 1620000273 - 2⁴ = 1620000257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1620000373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 910761 + ... + 912537.

It is an arithmetic number, because the mean of its divisors is an integer number (135768080).

Almost surely, 2^1620000273 is an apocalyptic number.

It is an amenable number.

1620000273 is a deficient number, since it is larger than the sum of its proper divisors (552289007).

1620000273 is a wasteful number, since it uses less digits than its factorization.

1620000273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 1620000273 is about 40249.2269863658. The cubic root of 1620000273 is about 1174.4603583234.

The spelling of 1620000273 in words is "one billion, six hundred twenty million, two hundred seventy-three", and thus it is an aban number.