2146969555 has 4 divisors (see below), whose sum is σ = 2576363472. Its totient is φ = 1717575640.

The previous prime is 2146969553. The next prime is 2146969589. The reversal of 2146969555 is 5559696412.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2146969555 - 2¹ = 2146969553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2146969553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214696951 + ... + 214696960.

It is an arithmetic number, because the mean of its divisors is an integer number (644090868).

Almost surely, 2^2146969555 is an apocalyptic number.

2146969555 is a deficient number, since it is larger than the sum of its proper divisors (429393917).

2146969555 is an equidigital number, since it uses as much as digits as its factorization.

2146969555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429393916.

The product of its digits is 2916000, while the sum is 52.

The square root of 2146969555 is about 46335.4028254854. The cubic root of 2146969555 is about 1290.0561950962.

The spelling of 2146969555 in words is "two billion, one hundred forty-six million, nine hundred sixty-nine thousand, five hundred fifty-five".