2154440315 has 4 divisors (see below), whose sum is σ = 2585328384. Its totient is φ = 1723552248.

The previous prime is 2154440303. The next prime is 2154440339. The reversal of 2154440315 is 5130444512.

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

It is a cyclic number.

It is not a de Polignac number, because 2154440315 - 2²⁰ = 2153391739 is a prime.

It is a super-2 number, since 2×2154440315² = 9283226141794598450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215444027 + ... + 215444036.

It is an arithmetic number, because the mean of its divisors is an integer number (646332096).

Almost surely, 2^2154440315 is an apocalyptic number.

2154440315 is a deficient number, since it is larger than the sum of its proper divisors (430888069).

2154440315 is an equidigital number, since it uses as much as digits as its factorization.

2154440315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430888068.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2154440315 is about 46415.9489292204. The cubic root of 2154440315 is about 1291.5507890405.

Adding to 2154440315 its reverse (5130444512), we get a palindrome (7284884827).

The spelling of 2154440315 in words is "two billion, one hundred fifty-four million, four hundred forty thousand, three hundred fifteen".