1620113271 has 16 divisors (see below), whose sum is σ = 2498490624. Its totient is φ = 914624064.

The previous prime is 1620113269. The next prime is 1620113281. The reversal of 1620113271 is 1723110261.

It is not a de Polignac number, because 1620113271 - 2¹ = 1620113269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620113221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 463006 + ... + 466491.

It is an arithmetic number, because the mean of its divisors is an integer number (156155664).

Almost surely, 2^1620113271 is an apocalyptic number.

1620113271 is a deficient number, since it is larger than the sum of its proper divisors (878377353).

1620113271 is an equidigital number, since it uses as much as digits as its factorization.

1620113271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929590.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 1620113271 is about 40250.6306907109. The cubic root of 1620113271 is about 1174.4876646123.

The spelling of 1620113271 in words is "one billion, six hundred twenty million, one hundred thirteen thousand, two hundred seventy-one".