2145946855 has 8 divisors (see below), whose sum is σ = 2773223712. Its totient is φ = 1584699168.

The previous prime is 2145946837. The next prime is 2145946861. The reversal of 2145946855 is 5586495412.

It is a happy number.

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

It is not a de Polignac number, because 2145946855 - 2⁹ = 2145946343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2145946799 and 2145946808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16507219 + ... + 16507348.

It is an arithmetic number, because the mean of its divisors is an integer number (346652964).

Almost surely, 2^2145946855 is an apocalyptic number.

2145946855 is a deficient number, since it is larger than the sum of its proper divisors (627276857).

2145946855 is a wasteful number, since it uses less digits than its factorization.

2145946855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33014585.

The product of its digits is 1728000, while the sum is 49.

The square root of 2145946855 is about 46324.3656729372. The cubic root of 2145946855 is about 1289.8513249323.

The spelling of 2145946855 in words is "two billion, one hundred forty-five million, nine hundred forty-six thousand, eight hundred fifty-five".